diff --git a/core-java-modules/core-java-11-2/pom.xml b/core-java-modules/core-java-11-2/pom.xml
index 2b7b042c61..332b24ff2e 100644
--- a/core-java-modules/core-java-11-2/pom.xml
+++ b/core-java-modules/core-java-11-2/pom.xml
@@ -20,12 +20,6 @@
             <artifactId>guava</artifactId>
             <version>${guava.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>org.mock-server</groupId>
             <artifactId>mockserver-junit-jupiter</artifactId>
@@ -87,7 +81,6 @@
         <maven.compiler.source.version>11</maven.compiler.source.version>
         <maven.compiler.target.version>11</maven.compiler.target.version>
         <guava.version>29.0-jre</guava.version>
-        <assertj.version>3.17.2</assertj.version>
         <mockserver.version>5.11.1</mockserver.version>
         <jakarta.ws-api.version>3.0.0</jakarta.ws-api.version>
         <jaxws-rt.version>3.0.0</jaxws-rt.version>
diff --git a/core-java-modules/core-java-11/pom.xml b/core-java-modules/core-java-11/pom.xml
index d3ffb0a8f0..fc61e373ec 100644
--- a/core-java-modules/core-java-11/pom.xml
+++ b/core-java-modules/core-java-11/pom.xml
@@ -21,12 +21,6 @@
             <artifactId>guava</artifactId>
             <version>${guava.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>org.openjdk.jmh</groupId>
             <artifactId>jmh-core</artifactId>
@@ -103,7 +97,6 @@
         <maven.compiler.source.version>11</maven.compiler.source.version>
         <maven.compiler.target.version>11</maven.compiler.target.version>
         <guava.version>27.1-jre</guava.version>
-        <assertj.version>3.11.1</assertj.version>
         <uberjar.name>benchmarks</uberjar.name>
         <eclipse.collections.version>10.0.0</eclipse.collections.version>
         <shade.plugin.version>3.2.4</shade.plugin.version>
diff --git a/core-java-modules/core-java-12/pom.xml b/core-java-modules/core-java-12/pom.xml
index 516f28fc3a..9f95b1bc3f 100644
--- a/core-java-modules/core-java-12/pom.xml
+++ b/core-java-modules/core-java-12/pom.xml
@@ -16,12 +16,6 @@
     </parent>
 
     <dependencies>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>commons-io</groupId>
             <artifactId>commons-io</artifactId>
@@ -53,7 +47,6 @@
     <properties>
         <maven.compiler.source.version>12</maven.compiler.source.version>
         <maven.compiler.target.version>12</maven.compiler.target.version>
-        <assertj.version>3.6.1</assertj.version>
     </properties>
 
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-13/pom.xml b/core-java-modules/core-java-13/pom.xml
index d28618a21a..9e42838971 100644
--- a/core-java-modules/core-java-13/pom.xml
+++ b/core-java-modules/core-java-13/pom.xml
@@ -16,15 +16,6 @@
         <version>1.0.0-SNAPSHOT</version>
     </parent>
 
-    <dependencies>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
-    </dependencies>
-
     <build>
         <plugins>
             <plugin>
@@ -52,7 +43,6 @@
     <properties>
         <maven.compiler.source.version>13</maven.compiler.source.version>
         <maven.compiler.target.version>13</maven.compiler.target.version>
-        <assertj.version>3.6.1</assertj.version>
         <surefire.plugin.version>3.0.0-M3</surefire.plugin.version>
     </properties>
 
diff --git a/core-java-modules/core-java-14/pom.xml b/core-java-modules/core-java-14/pom.xml
index 3967ce3455..35ea0bd2d0 100644
--- a/core-java-modules/core-java-14/pom.xml
+++ b/core-java-modules/core-java-14/pom.xml
@@ -14,15 +14,6 @@
         <version>1.0.0-SNAPSHOT</version>
     </parent>
 
-    <dependencies>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
-    </dependencies>
-
     <build>
         <plugins>
             <plugin>
@@ -49,7 +40,6 @@
 
     <properties>
         <maven.compiler.release>14</maven.compiler.release>
-        <assertj.version>3.6.1</assertj.version>
         <maven-compiler-plugin.version>3.8.1</maven-compiler-plugin.version>
         <surefire.plugin.version>3.0.0-M3</surefire.plugin.version>
     </properties>
diff --git a/core-java-modules/core-java-15/pom.xml b/core-java-modules/core-java-15/pom.xml
index a71987c23a..8cb6c2410d 100644
--- a/core-java-modules/core-java-15/pom.xml
+++ b/core-java-modules/core-java-15/pom.xml
@@ -21,12 +21,6 @@
             <artifactId>commons-lang3</artifactId>
             <version>${commons-lang3.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
     <build>
@@ -55,7 +49,6 @@
 
     <properties>
         <maven.compiler.release>15</maven.compiler.release>
-        <assertj.version>3.17.2</assertj.version>
         <maven-compiler-plugin.version>3.8.1</maven-compiler-plugin.version>
         <surefire.plugin.version>3.0.0-M3</surefire.plugin.version>
     </properties>
diff --git a/core-java-modules/core-java-16/pom.xml b/core-java-modules/core-java-16/pom.xml
index 99952a73d9..4adc3ee6d1 100644
--- a/core-java-modules/core-java-16/pom.xml
+++ b/core-java-modules/core-java-16/pom.xml
@@ -17,12 +17,6 @@
     </parent>
 
     <dependencies>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>org.apache.commons</groupId>
             <artifactId>commons-lang3</artifactId>
@@ -67,7 +61,6 @@
         <maven.compiler.target.version>16</maven.compiler.target.version>
         <maven.compiler.release>16</maven.compiler.release>
         <surefire.plugin.version>3.0.0-M5</surefire.plugin.version>
-        <assertj.version>3.17.2</assertj.version>
     </properties>
 
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-17/pom.xml b/core-java-modules/core-java-17/pom.xml
index 677454a64b..2fe16cad57 100644
--- a/core-java-modules/core-java-17/pom.xml
+++ b/core-java-modules/core-java-17/pom.xml
@@ -16,15 +16,6 @@
         <relativePath>../../</relativePath>
     </parent>
 
-    <dependencies>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
-    </dependencies>
-
     <build>
         <plugins>
             <plugin>
@@ -63,7 +54,6 @@
         <maven.compiler.target.version>17</maven.compiler.target.version>
         <maven.compiler.release>17</maven.compiler.release>
         <surefire.plugin.version>3.0.0-M5</surefire.plugin.version>
-        <assertj.version>3.17.2</assertj.version>
     </properties>
 
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-8-2/pom.xml b/core-java-modules/core-java-8-2/pom.xml
index af26289db8..7db1e1ed4e 100644
--- a/core-java-modules/core-java-8-2/pom.xml
+++ b/core-java-modules/core-java-8-2/pom.xml
@@ -20,17 +20,10 @@
             <artifactId>icu4j</artifactId>
             <version>${icu.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
     <properties>
         <icu.version>64.2</icu.version>
-        <assertj.version>3.12.2</assertj.version>
     </properties>
 
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-8-datetime-2/pom.xml b/core-java-modules/core-java-8-datetime-2/pom.xml
index e662ba400c..9e54b0ee12 100644
--- a/core-java-modules/core-java-8-datetime-2/pom.xml
+++ b/core-java-modules/core-java-8-datetime-2/pom.xml
@@ -25,12 +25,6 @@
             <artifactId>joda-time</artifactId>
             <version>${joda-time.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>log4j</groupId>
             <artifactId>log4j</artifactId>
@@ -63,8 +57,6 @@
         <maven.compiler.source>1.8</maven.compiler.source>
         <maven.compiler.target>1.8</maven.compiler.target>
         <joda-time.version>2.10</joda-time.version>
-        <!-- testing -->
-        <assertj.version>3.6.1</assertj.version>
     </properties>
 
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-8-datetime/pom.xml b/core-java-modules/core-java-8-datetime/pom.xml
index f58557df7f..01ec6c0b76 100644
--- a/core-java-modules/core-java-8-datetime/pom.xml
+++ b/core-java-modules/core-java-8-datetime/pom.xml
@@ -25,12 +25,6 @@
             <artifactId>joda-time</artifactId>
             <version>${joda-time.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>log4j</groupId>
             <artifactId>log4j</artifactId>
@@ -64,8 +58,6 @@
         <maven.compiler.source>1.8</maven.compiler.source>
         <maven.compiler.target>1.8</maven.compiler.target>
         <joda-time.version>2.10</joda-time.version>
-        <!-- testing -->
-        <assertj.version>3.6.1</assertj.version>
     </properties>
 
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-8/pom.xml b/core-java-modules/core-java-8/pom.xml
index 987ba2e568..85e289280b 100644
--- a/core-java-modules/core-java-8/pom.xml
+++ b/core-java-modules/core-java-8/pom.xml
@@ -31,13 +31,6 @@
             <version>${lombok.version}</version>
             <scope>provided</scope>
         </dependency>
-        <!-- test scoped -->
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
     <build>
@@ -53,8 +46,6 @@
     <properties>
         <!-- util -->
         <commons-collections4.version>4.1</commons-collections4.version>
-        <!-- testing -->
-        <assertj.version>3.6.1</assertj.version>
     </properties>
 
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-9-improvements/pom.xml b/core-java-modules/core-java-9-improvements/pom.xml
index 6abdd7dab8..e6c596937b 100644
--- a/core-java-modules/core-java-9-improvements/pom.xml
+++ b/core-java-modules/core-java-9-improvements/pom.xml
@@ -21,12 +21,6 @@
             <version>${awaitility.version}</version>
             <scope>test</scope>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>com.google.guava</groupId>
             <artifactId>guava</artifactId>
@@ -68,8 +62,6 @@
     </pluginRepositories>
 
     <properties>
-        <!-- testing -->
-        <assertj.version>3.10.0</assertj.version>
         <awaitility.version>1.7.0</awaitility.version>
         <maven.compiler.source>1.9</maven.compiler.source>
         <maven.compiler.target>1.9</maven.compiler.target>
diff --git a/core-java-modules/core-java-9-new-features/pom.xml b/core-java-modules/core-java-9-new-features/pom.xml
index 7dca8d5f88..ce90a0f04a 100644
--- a/core-java-modules/core-java-9-new-features/pom.xml
+++ b/core-java-modules/core-java-9-new-features/pom.xml
@@ -20,12 +20,6 @@
             <artifactId>rxjava</artifactId>
             <version>${rxjava.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>org.junit.platform</groupId>
             <artifactId>junit-platform-runner</artifactId>
@@ -156,8 +150,6 @@
 
     <properties>
         <rxjava.version>3.0.0</rxjava.version>
-        <!-- testing -->
-        <assertj.version>3.10.0</assertj.version>
         <awaitility.version>4.0.2</awaitility.version>
         <maven.compiler.source>1.9</maven.compiler.source>
         <maven.compiler.target>1.9</maven.compiler.target>
diff --git a/core-java-modules/core-java-9/pom.xml b/core-java-modules/core-java-9/pom.xml
index d4d58085c8..03a097e7a9 100644
--- a/core-java-modules/core-java-9/pom.xml
+++ b/core-java-modules/core-java-9/pom.xml
@@ -21,12 +21,6 @@
             <version>${awaitility.version}</version>
             <scope>test</scope>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>com.google.guava</groupId>
             <artifactId>guava</artifactId>
@@ -78,8 +72,6 @@
     </pluginRepositories>
 
     <properties>
-        <!-- testing -->
-        <assertj.version>3.10.0</assertj.version>
         <awaitility.version>1.7.0</awaitility.version>
         <maven.compiler.source>1.9</maven.compiler.source>
         <maven.compiler.target>1.9</maven.compiler.target>
diff --git a/core-java-modules/core-java-annotations/pom.xml b/core-java-modules/core-java-annotations/pom.xml
index 7e87678159..a1f84ab563 100644
--- a/core-java-modules/core-java-annotations/pom.xml
+++ b/core-java-modules/core-java-annotations/pom.xml
@@ -14,15 +14,6 @@
         <version>0.0.1-SNAPSHOT</version>
     </parent>
 
-    <dependencies>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj-core.version}</version>
-            <scope>test</scope>
-        </dependency>
-    </dependencies>
-
     <build>
         <finalName>core-java-annotations</finalName>
         <resources>
@@ -32,9 +23,5 @@
             </resource>
         </resources>
     </build>
-    
-    <properties>
-        <assertj-core.version>3.10.0</assertj-core.version>
-    </properties>
 
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-arrays-guides/pom.xml b/core-java-modules/core-java-arrays-guides/pom.xml
index 0c8b680c1b..d22f6b4d7d 100644
--- a/core-java-modules/core-java-arrays-guides/pom.xml
+++ b/core-java-modules/core-java-arrays-guides/pom.xml
@@ -24,16 +24,6 @@
             <artifactId>jmh-generator-annprocess</artifactId>
             <version>${jmh-generator.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
-    <properties>
-        <assertj.version>3.19.0</assertj.version>
-    </properties>
-
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-arrays-operations-advanced/pom.xml b/core-java-modules/core-java-arrays-operations-advanced/pom.xml
index 50830eba2a..cbcd6ae440 100644
--- a/core-java-modules/core-java-arrays-operations-advanced/pom.xml
+++ b/core-java-modules/core-java-arrays-operations-advanced/pom.xml
@@ -19,12 +19,6 @@
             <artifactId>commons-lang3</artifactId>
             <version>${commons-lang3.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj-core.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>org.openjdk.jmh</groupId>
             <artifactId>jmh-core</artifactId>
@@ -64,8 +58,4 @@
         </plugins>
     </build>
 
-    <properties>
-        <assertj-core.version>3.10.0</assertj-core.version>
-    </properties>
-
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-arrays-operations-basic/pom.xml b/core-java-modules/core-java-arrays-operations-basic/pom.xml
index 382cee102d..6517b2efb9 100644
--- a/core-java-modules/core-java-arrays-operations-basic/pom.xml
+++ b/core-java-modules/core-java-arrays-operations-basic/pom.xml
@@ -30,12 +30,6 @@
             <artifactId>jmh-generator-annprocess</artifactId>
             <version>${jmh-generator.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj-core.version}</version>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
     <build>
@@ -67,7 +61,6 @@
 
     <properties>
         <shade.plugin.version>3.2.0</shade.plugin.version>
-        <assertj-core.version>3.10.0</assertj-core.version>
     </properties>
 
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-arrays-sorting/pom.xml b/core-java-modules/core-java-arrays-sorting/pom.xml
index e9946d46ed..97ff95e92b 100644
--- a/core-java-modules/core-java-arrays-sorting/pom.xml
+++ b/core-java-modules/core-java-arrays-sorting/pom.xml
@@ -36,13 +36,6 @@
             <artifactId>jmh-generator-annprocess</artifactId>
             <version>${jmh-generator.version}</version>
         </dependency>
-        <!-- Testing -->
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj-core.version}</version>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
     <build>
@@ -75,7 +68,6 @@
     <properties>
         <shade.plugin.version>3.2.0</shade.plugin.version>
         <guava.version>28.2-jre</guava.version>
-        <assertj-core.version>3.10.0</assertj-core.version>
     </properties>
 
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-char/pom.xml b/core-java-modules/core-java-char/pom.xml
index 009197a1d0..7dc0923fb5 100644
--- a/core-java-modules/core-java-char/pom.xml
+++ b/core-java-modules/core-java-char/pom.xml
@@ -15,12 +15,6 @@
     </parent>
 
     <dependencies>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>org.openjdk.jmh</groupId>
             <artifactId>jmh-core</artifactId>
@@ -33,8 +27,4 @@
         </dependency>
     </dependencies>
 
-    <properties>
-        <assertj.version>3.11.1</assertj.version>
-    </properties>
-
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-collections-2/pom.xml b/core-java-modules/core-java-collections-2/pom.xml
index 0f1f1ee2fe..23100b1d87 100644
--- a/core-java-modules/core-java-collections-2/pom.xml
+++ b/core-java-modules/core-java-collections-2/pom.xml
@@ -34,12 +34,6 @@
             <artifactId>commons-lang3</artifactId>
             <version>${commons-lang3.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>org.junit.platform</groupId>
             <artifactId>junit-platform-runner</artifactId>
@@ -51,7 +45,6 @@
     <properties>
         <eclipse.collections.version>7.1.0</eclipse.collections.version>
         <commons-collections4.version>4.1</commons-collections4.version>
-        <assertj.version>3.11.1</assertj.version>
         <commons-exec.version>1.3</commons-exec.version>
     </properties>
 
diff --git a/core-java-modules/core-java-collections-3/pom.xml b/core-java-modules/core-java-collections-3/pom.xml
index 4ca4bda1ee..6ef8e3c81a 100644
--- a/core-java-modules/core-java-collections-3/pom.xml
+++ b/core-java-modules/core-java-collections-3/pom.xml
@@ -25,12 +25,6 @@
             <artifactId>jmh-core</artifactId>
             <version>${jmh-core.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>org.apache.commons</groupId>
             <artifactId>commons-lang3</artifactId>
@@ -39,7 +33,6 @@
     </dependencies>
 
     <properties>
-        <assertj.version>3.11.1</assertj.version>
         <jol-core.version>0.10</jol-core.version>
     </properties>
 
diff --git a/core-java-modules/core-java-collections-4/pom.xml b/core-java-modules/core-java-collections-4/pom.xml
index d86b04644c..2193b5118a 100644
--- a/core-java-modules/core-java-collections-4/pom.xml
+++ b/core-java-modules/core-java-collections-4/pom.xml
@@ -14,17 +14,4 @@
         <version>0.0.1-SNAPSHOT</version>
     </parent>
 
-    <dependencies>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
-    </dependencies>
-
-    <properties>
-        <assertj.version>3.19.0</assertj.version>
-    </properties>
-
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-collections-array-list/pom.xml b/core-java-modules/core-java-collections-array-list/pom.xml
index c14e59bac0..ca9c173947 100644
--- a/core-java-modules/core-java-collections-array-list/pom.xml
+++ b/core-java-modules/core-java-collections-array-list/pom.xml
@@ -20,17 +20,10 @@
             <artifactId>commons-collections4</artifactId>
             <version>${commons-collections4.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
     <properties>
         <commons-collections4.version>4.1</commons-collections4.version>
-        <assertj.version>3.11.1</assertj.version>
     </properties>
 
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-collections-list-2/pom.xml b/core-java-modules/core-java-collections-list-2/pom.xml
index 51e66fc0c2..7876b19cf9 100644
--- a/core-java-modules/core-java-collections-list-2/pom.xml
+++ b/core-java-modules/core-java-collections-list-2/pom.xml
@@ -20,12 +20,6 @@
             <artifactId>commons-collections4</artifactId>
             <version>${commons-collections4.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>org.projectlombok</groupId>
             <artifactId>lombok</artifactId>
@@ -36,7 +30,6 @@
 
     <properties>
         <commons-collections4.version>4.1</commons-collections4.version>
-        <assertj.version>3.11.1</assertj.version>
     </properties>
 
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-collections-list-3/pom.xml b/core-java-modules/core-java-collections-list-3/pom.xml
index efe79509c1..9238939df7 100644
--- a/core-java-modules/core-java-collections-list-3/pom.xml
+++ b/core-java-modules/core-java-collections-list-3/pom.xml
@@ -26,12 +26,6 @@
             <version>${guava.version}</version>
             <scope>compile</scope>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>net.sf.trove4j</groupId>
             <artifactId>trove4j</artifactId>
@@ -61,7 +55,6 @@
 
     <properties>
         <commons-collections4.version>4.1</commons-collections4.version>
-        <assertj.version>3.11.1</assertj.version>
         <trove4j.version>3.0.2</trove4j.version>
         <fastutil.version>8.1.0</fastutil.version>
         <colt.version>1.2.0</colt.version>
diff --git a/core-java-modules/core-java-collections-list/pom.xml b/core-java-modules/core-java-collections-list/pom.xml
index ae1e1561c6..b60906d1ba 100644
--- a/core-java-modules/core-java-collections-list/pom.xml
+++ b/core-java-modules/core-java-collections-list/pom.xml
@@ -25,17 +25,10 @@
             <artifactId>commons-lang3</artifactId>
             <version>${commons-lang3.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
     <properties>
         <commons-collections4.version>4.1</commons-collections4.version>
-        <assertj.version>3.11.1</assertj.version>
     </properties>
 
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-collections-maps-2/pom.xml b/core-java-modules/core-java-collections-maps-2/pom.xml
index 772cf30416..060796fafa 100644
--- a/core-java-modules/core-java-collections-maps-2/pom.xml
+++ b/core-java-modules/core-java-collections-maps-2/pom.xml
@@ -51,12 +51,6 @@
             <version>${avaitility.version}</version>
             <scope>test</scope>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
     <properties>
@@ -66,7 +60,6 @@
         <eclipse-collections.version>8.2.0</eclipse-collections.version>
         <hppc.version>0.7.2</hppc.version>
         <fastutil.version>8.1.0</fastutil.version>
-        <assertj.version>3.11.1</assertj.version>
     </properties>
 
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-collections-maps/pom.xml b/core-java-modules/core-java-collections-maps/pom.xml
index 245c4b04bb..66aca9c1b2 100644
--- a/core-java-modules/core-java-collections-maps/pom.xml
+++ b/core-java-modules/core-java-collections-maps/pom.xml
@@ -20,17 +20,10 @@
             <artifactId>commons-collections4</artifactId>
             <version>${commons-collections4.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
     <properties>
         <commons-collections4.version>4.1</commons-collections4.version>
-        <assertj.version>3.6.1</assertj.version>
     </properties>
 
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-collections/pom.xml b/core-java-modules/core-java-collections/pom.xml
index 8fbc6e8de7..8df0d7cdd3 100644
--- a/core-java-modules/core-java-collections/pom.xml
+++ b/core-java-modules/core-java-collections/pom.xml
@@ -15,12 +15,6 @@
     </parent>
 
     <dependencies>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>org.openjdk.jmh</groupId>
             <artifactId>jmh-core</artifactId>
@@ -33,8 +27,4 @@
         </dependency>
     </dependencies>
 
-    <properties>
-        <assertj.version>3.11.1</assertj.version>
-    </properties>
-
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-concurrency-advanced-2/pom.xml b/core-java-modules/core-java-concurrency-advanced-2/pom.xml
index 93c23ccae7..1f19dc8cca 100644
--- a/core-java-modules/core-java-concurrency-advanced-2/pom.xml
+++ b/core-java-modules/core-java-concurrency-advanced-2/pom.xml
@@ -30,12 +30,6 @@
             <artifactId>jmh-generator-annprocess</artifactId>
             <version>${jmh-generator.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
     <build>
@@ -48,8 +42,4 @@
         </resources>
     </build>
 
-    <properties>
-        <assertj.version>3.6.1</assertj.version>
-    </properties>
-
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-concurrency-advanced-3/pom.xml b/core-java-modules/core-java-concurrency-advanced-3/pom.xml
index 915aa8d912..591e46f505 100644
--- a/core-java-modules/core-java-concurrency-advanced-3/pom.xml
+++ b/core-java-modules/core-java-concurrency-advanced-3/pom.xml
@@ -15,12 +15,6 @@
     </parent>
 
     <dependencies>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>com.jcabi</groupId>
             <artifactId>jcabi-aspects</artifactId>
@@ -94,7 +88,6 @@
     </build>
 
     <properties>
-        <assertj.version>3.14.0</assertj.version>
         <maven.compiler.source>1.8</maven.compiler.source>
         <maven.compiler.target>1.8</maven.compiler.target>
         <jcabi-aspects.version>0.22.6</jcabi-aspects.version>
diff --git a/core-java-modules/core-java-concurrency-advanced/pom.xml b/core-java-modules/core-java-concurrency-advanced/pom.xml
index 3c21b49ae5..a026bdb2cd 100644
--- a/core-java-modules/core-java-concurrency-advanced/pom.xml
+++ b/core-java-modules/core-java-concurrency-advanced/pom.xml
@@ -35,12 +35,6 @@
             <artifactId>commons-math3</artifactId>
             <version>${commons-math3.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>com.jayway.awaitility</groupId>
             <artifactId>awaitility</artifactId>
@@ -60,13 +54,10 @@
     </build>
 
     <properties>
-        <!-- util -->
         <guava.version>21.0</guava.version>
         <commons-math3.version>3.6.1</commons-math3.version>
         <commons-collections4.version>4.1</commons-collections4.version>
         <collections-generic.version>4.01</collections-generic.version>
-        <!-- testing -->
-        <assertj.version>3.6.1</assertj.version>
         <avaitility.version>1.7.0</avaitility.version>
     </properties>
 
diff --git a/core-java-modules/core-java-concurrency-basic/pom.xml b/core-java-modules/core-java-concurrency-basic/pom.xml
index 7212a2dcb1..1e3157291a 100644
--- a/core-java-modules/core-java-concurrency-basic/pom.xml
+++ b/core-java-modules/core-java-concurrency-basic/pom.xml
@@ -20,12 +20,6 @@
             <artifactId>commons-lang3</artifactId>
             <version>${commons-lang3.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>com.jayway.awaitility</groupId>
             <artifactId>awaitility</artifactId>
@@ -45,8 +39,6 @@
     </build>
 
     <properties>
-        <!-- testing -->
-        <assertj.version>3.6.1</assertj.version>
         <avaitility.version>1.7.0</avaitility.version>
     </properties>
 
diff --git a/core-java-modules/core-java-concurrency-collections-2/pom.xml b/core-java-modules/core-java-concurrency-collections-2/pom.xml
index 8de0e1bef7..02c046b2ea 100644
--- a/core-java-modules/core-java-concurrency-collections-2/pom.xml
+++ b/core-java-modules/core-java-concurrency-collections-2/pom.xml
@@ -29,18 +29,10 @@
             <artifactId>jmh-generator-annprocess</artifactId>
             <version>${jmh-generator.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
     <properties>
         <guava.version>28.2-jre</guava.version>
-        <!-- testing -->
-        <assertj.version>3.6.1</assertj.version>
     </properties>
 
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-concurrency-collections/pom.xml b/core-java-modules/core-java-concurrency-collections/pom.xml
index f22da1c848..8b8d2fe03b 100644
--- a/core-java-modules/core-java-concurrency-collections/pom.xml
+++ b/core-java-modules/core-java-concurrency-collections/pom.xml
@@ -14,15 +14,6 @@
         <version>0.0.1-SNAPSHOT</version>
     </parent>
 
-    <dependencies>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
-    </dependencies>
-
     <build>
         <finalName>core-java-concurrency-collections</finalName>
         <resources>
@@ -33,9 +24,4 @@
         </resources>
     </build>
 
-    <properties>
-        <!-- testing -->
-        <assertj.version>3.6.1</assertj.version>
-    </properties>
-
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-date-operations-1/pom.xml b/core-java-modules/core-java-date-operations-1/pom.xml
index 8a13163ba4..ea9f94fa56 100644
--- a/core-java-modules/core-java-date-operations-1/pom.xml
+++ b/core-java-modules/core-java-date-operations-1/pom.xml
@@ -25,12 +25,7 @@
             <artifactId>commons-lang3</artifactId>
             <version>${commons-lang3.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
+
         <dependency>
             <groupId>com.darwinsys</groupId>
             <artifactId>hirondelle-date4j</artifactId>
@@ -62,8 +57,6 @@
 
     <properties>
         <joda-time.version>2.10</joda-time.version>
-        <!-- testing -->
-        <assertj.version>3.6.1</assertj.version>
         <hirondelle-date4j.version>RELEASE</hirondelle-date4j.version>
         <maven.compiler.source>1.9</maven.compiler.source>
         <maven.compiler.target>1.9</maven.compiler.target>
diff --git a/core-java-modules/core-java-date-operations-2/pom.xml b/core-java-modules/core-java-date-operations-2/pom.xml
index 1d283851ca..f60c7b7fc0 100644
--- a/core-java-modules/core-java-date-operations-2/pom.xml
+++ b/core-java-modules/core-java-date-operations-2/pom.xml
@@ -30,18 +30,11 @@
             <artifactId>hirondelle-date4j</artifactId>
             <version>${hirondelle-date4j.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
     <properties>
         <joda-time.version>2.10</joda-time.version>
         <hirondelle-date4j.version>1.5.1</hirondelle-date4j.version>
-        <assertj.version>3.14.0</assertj.version>
     </properties>
 
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-datetime-conversion/pom.xml b/core-java-modules/core-java-datetime-conversion/pom.xml
index 8f082e2793..6e9aeaf5af 100644
--- a/core-java-modules/core-java-datetime-conversion/pom.xml
+++ b/core-java-modules/core-java-datetime-conversion/pom.xml
@@ -31,13 +31,6 @@
             <artifactId>log4j</artifactId>
             <version>${log4j.version}</version>
         </dependency>
-        <!-- test scoped -->
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
     <build>
@@ -63,8 +56,6 @@
 
     <properties>
         <joda-time.version>2.10</joda-time.version>
-        <!-- testing -->
-        <assertj.version>3.6.1</assertj.version>
         <maven.compiler.source>1.9</maven.compiler.source>
         <maven.compiler.target>1.9</maven.compiler.target>
     </properties>
diff --git a/core-java-modules/core-java-datetime-string/pom.xml b/core-java-modules/core-java-datetime-string/pom.xml
index a65659be71..2b3c2edb02 100644
--- a/core-java-modules/core-java-datetime-string/pom.xml
+++ b/core-java-modules/core-java-datetime-string/pom.xml
@@ -31,13 +31,6 @@
             <artifactId>log4j</artifactId>
             <version>${log4j.version}</version>
         </dependency>
-        <!-- test scoped -->
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>joda-time</groupId>
             <artifactId>joda-time</artifactId>
@@ -76,8 +69,6 @@
         <commons-validator.version>1.6</commons-validator.version>
         <joda-time.version>2.10.10</joda-time.version>
         <hirondelle-date4j.version>RELEASE</hirondelle-date4j.version>
-        <!-- testing -->
-        <assertj.version>3.6.1</assertj.version>
         <maven.compiler.source>1.9</maven.compiler.source>
         <maven.compiler.target>1.9</maven.compiler.target>
     </properties>
diff --git a/core-java-modules/core-java-exceptions-2/pom.xml b/core-java-modules/core-java-exceptions-2/pom.xml
index d952683a64..9103672cd4 100644
--- a/core-java-modules/core-java-exceptions-2/pom.xml
+++ b/core-java-modules/core-java-exceptions-2/pom.xml
@@ -15,13 +15,6 @@
     </parent>
 
     <dependencies>
-        <!-- test scoped -->
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj-core.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>org.apache.commons</groupId>
             <artifactId>commons-lang3</artifactId>
@@ -29,9 +22,4 @@
         </dependency>
     </dependencies>
 
-    <properties>
-        <!-- testing -->
-        <assertj-core.version>3.10.0</assertj-core.version>
-    </properties>
-
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-exceptions-3/pom.xml b/core-java-modules/core-java-exceptions-3/pom.xml
index ffc21799ce..18dc52932e 100644
--- a/core-java-modules/core-java-exceptions-3/pom.xml
+++ b/core-java-modules/core-java-exceptions-3/pom.xml
@@ -22,18 +22,9 @@
             <version>${h2.version}</version>
             <scope>test</scope>
         </dependency>
-        <!-- test scoped -->
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj-core.version}</version>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
     <properties>
-        <!-- testing -->
-        <assertj-core.version>3.10.0</assertj-core.version>
         <h2.version>1.4.191</h2.version>
     </properties>
 
diff --git a/core-java-modules/core-java-exceptions/pom.xml b/core-java-modules/core-java-exceptions/pom.xml
index d5581279b5..f1f60120a5 100644
--- a/core-java-modules/core-java-exceptions/pom.xml
+++ b/core-java-modules/core-java-exceptions/pom.xml
@@ -32,19 +32,10 @@
             <artifactId>commons-lang3</artifactId>
             <version>${commons-lang3.version}</version>
         </dependency>
-        <!-- test scoped -->
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj-core.version}</version>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
     <properties>
         <javax.mail.version>1.5.0-b01</javax.mail.version>
-        <!-- testing -->
-        <assertj-core.version>3.10.0</assertj-core.version>
     </properties>
 
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-function/pom.xml b/core-java-modules/core-java-function/pom.xml
index cc44ba5a7c..a3add5a686 100644
--- a/core-java-modules/core-java-function/pom.xml
+++ b/core-java-modules/core-java-function/pom.xml
@@ -14,16 +14,6 @@
         <version>0.0.1-SNAPSHOT</version>
     </parent>
 
-    <dependencies>
-        <!-- test scoped -->
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
-    </dependencies>
-
     <build>
         <finalName>core-java-function</finalName>
         <resources>
@@ -34,9 +24,4 @@
         </resources>
     </build>
 
-    <properties>
-        <!-- testing -->
-        <assertj.version>3.6.1</assertj.version>
-    </properties>
-
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-io-2/pom.xml b/core-java-modules/core-java-io-2/pom.xml
index 924248f4f9..800756767c 100644
--- a/core-java-modules/core-java-io-2/pom.xml
+++ b/core-java-modules/core-java-io-2/pom.xml
@@ -38,13 +38,6 @@
             <artifactId>log4j-over-slf4j</artifactId>
             <version>${org.slf4j.version}</version>
         </dependency>
-        <!-- test scoped -->
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
         <!-- https://mvnrepository.com/artifact/com.github.tomakehurst/wiremock -->
         <dependency>
             <groupId>com.github.tomakehurst</groupId>
@@ -76,7 +69,6 @@
     </build>
 
     <properties>
-        <assertj.version>3.6.1</assertj.version>
         <maven-javadoc-plugin.version>3.0.0-M1</maven-javadoc-plugin.version>
         <wiremock.version>2.26.3</wiremock.version>
     </properties>
diff --git a/core-java-modules/core-java-io-3/pom.xml b/core-java-modules/core-java-io-3/pom.xml
index 017b56f03f..7af90dbab9 100644
--- a/core-java-modules/core-java-io-3/pom.xml
+++ b/core-java-modules/core-java-io-3/pom.xml
@@ -38,17 +38,6 @@
             <artifactId>log4j-over-slf4j</artifactId>
             <version>${org.slf4j.version}</version>
         </dependency>
-        <!-- test scoped -->
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
-    <properties>
-        <assertj.version>3.6.1</assertj.version>
-    </properties>
-
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-io-4/pom.xml b/core-java-modules/core-java-io-4/pom.xml
index 0501bb4a66..9fc00ff586 100644
--- a/core-java-modules/core-java-io-4/pom.xml
+++ b/core-java-modules/core-java-io-4/pom.xml
@@ -32,17 +32,6 @@
             <artifactId>log4j-over-slf4j</artifactId>
             <version>${org.slf4j.version}</version>
         </dependency>
-        <!-- test scoped -->
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
-    <properties>
-        <assertj.version>3.6.1</assertj.version>
-    </properties>
-
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-io-apis/pom.xml b/core-java-modules/core-java-io-apis/pom.xml
index f2a574ed89..fab2bff959 100644
--- a/core-java-modules/core-java-io-apis/pom.xml
+++ b/core-java-modules/core-java-io-apis/pom.xml
@@ -32,13 +32,6 @@
             <version>${lombok.version}</version>
             <scope>provided</scope>
         </dependency>
-        <!-- test scoped -->
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
     <build>
@@ -51,8 +44,4 @@
         </resources>
     </build>
 
-    <properties>
-        <assertj.version>3.6.1</assertj.version>
-    </properties>
-
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-io/pom.xml b/core-java-modules/core-java-io/pom.xml
index a036818226..7de29ac23c 100644
--- a/core-java-modules/core-java-io/pom.xml
+++ b/core-java-modules/core-java-io/pom.xml
@@ -15,13 +15,6 @@
     </parent>
 
     <dependencies>
-        <!-- test scoped -->
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>org.hsqldb</groupId>
             <artifactId>hsqldb</artifactId>
@@ -132,8 +125,6 @@
     </profiles>
 
     <properties>
-        <!-- testing -->
-        <assertj.version>3.6.1</assertj.version>
         <!-- maven plugins -->
         <maven-javadoc-plugin.version>3.0.0-M1</maven-javadoc-plugin.version>
         <hsqldb.version>2.4.0</hsqldb.version>
diff --git a/core-java-modules/core-java-jar/pom.xml b/core-java-modules/core-java-jar/pom.xml
index 3c5a1b35bf..da107c745f 100644
--- a/core-java-modules/core-java-jar/pom.xml
+++ b/core-java-modules/core-java-jar/pom.xml
@@ -49,13 +49,6 @@
             <version>${lombok.version}</version>
             <scope>provided</scope>
         </dependency>
-        <!-- test scoped -->
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj-core.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>org.javamoney</groupId>
             <artifactId>moneta</artifactId>
@@ -376,8 +369,6 @@
         <!-- util -->
         <unix4j.version>0.4</unix4j.version>
         <grep4j.version>1.8.7</grep4j.version>
-        <!-- testing -->
-        <assertj-core.version>3.10.0</assertj-core.version>
         <!-- maven plugins -->
         <javamoney.moneta.version>1.1</javamoney.moneta.version>
         <maven-javadoc-plugin.version>3.0.0-M1</maven-javadoc-plugin.version>
diff --git a/core-java-modules/core-java-jndi/pom.xml b/core-java-modules/core-java-jndi/pom.xml
index f971623bc2..68b7f9361f 100644
--- a/core-java-modules/core-java-jndi/pom.xml
+++ b/core-java-modules/core-java-jndi/pom.xml
@@ -47,12 +47,6 @@
             <version>${apacheds.version}</version>
             <scope>test</scope>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj-core.version}</version>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
     <build>
@@ -71,7 +65,6 @@
     <properties>
         <spring.version>5.0.9.RELEASE</spring.version>
         <h2.version>1.4.199</h2.version>
-        <assertj-core.version>3.21.0</assertj-core.version>
         <apacheds.version>2.0.0.AM26</apacheds.version>
         <source.version>1.8</source.version>
         <target.version>1.8</target.version>
diff --git a/core-java-modules/core-java-jvm-2/pom.xml b/core-java-modules/core-java-jvm-2/pom.xml
index b34aac5a78..60a2795116 100644
--- a/core-java-modules/core-java-jvm-2/pom.xml
+++ b/core-java-modules/core-java-jvm-2/pom.xml
@@ -15,12 +15,6 @@
     </parent>
 
     <dependencies>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>org.openjdk.jol</groupId>
             <artifactId>jol-core</artifactId>
@@ -39,7 +33,6 @@
     </dependencies>
 
     <properties>
-        <assertj.version>3.6.1</assertj.version>
         <jol-core.version>0.10</jol-core.version>
         <reflections.version>0.10.2</reflections.version>
         <guava.version>31.0.1-jre</guava.version>
diff --git a/core-java-modules/core-java-jvm/pom.xml b/core-java-modules/core-java-jvm/pom.xml
index 38cb1a7825..c47765e43d 100644
--- a/core-java-modules/core-java-jvm/pom.xml
+++ b/core-java-modules/core-java-jvm/pom.xml
@@ -20,12 +20,6 @@
             <artifactId>commons-lang3</artifactId>
             <version>${commons-lang3.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>org.javassist</groupId>
             <artifactId>javassist</artifactId>
@@ -66,8 +60,6 @@
     </dependencies>
 
     <properties>
-        <assertj.version>3.6.1</assertj.version>
-        <!-- instrumentation -->
         <javaassist.version>3.27.0-GA</javaassist.version>
         <sun.tools.version>1.8.0</sun.tools.version>
         <jol-core.version>0.10</jol-core.version>
diff --git a/core-java-modules/core-java-lang-2/pom.xml b/core-java-modules/core-java-lang-2/pom.xml
index d1a8d68075..f155f2abaf 100644
--- a/core-java-modules/core-java-lang-2/pom.xml
+++ b/core-java-modules/core-java-lang-2/pom.xml
@@ -45,12 +45,6 @@
             <artifactId>jmh-core</artifactId>
             <version>${jmh-core.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
     <build>
@@ -64,7 +58,6 @@
     </build>
 
     <properties>
-        <assertj.version>3.12.2</assertj.version>
         <commons.beanutils.version>1.9.4</commons.beanutils.version>
         <guava.version>29.0-jre</guava.version>
     </properties>
diff --git a/core-java-modules/core-java-lang-3/pom.xml b/core-java-modules/core-java-lang-3/pom.xml
index 0eda5dd16b..92c724826c 100644
--- a/core-java-modules/core-java-lang-3/pom.xml
+++ b/core-java-modules/core-java-lang-3/pom.xml
@@ -15,12 +15,6 @@
     </parent>
 
     <dependencies>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>com.google.guava</groupId>
             <artifactId>guava</artifactId>
@@ -45,8 +39,4 @@
         </resources>
     </build>
 
-    <properties>
-        <assertj.version>3.12.2</assertj.version>
-    </properties>
-
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-lang-math-2/pom.xml b/core-java-modules/core-java-lang-math-2/pom.xml
index 4411d313db..4057429896 100644
--- a/core-java-modules/core-java-lang-math-2/pom.xml
+++ b/core-java-modules/core-java-lang-math-2/pom.xml
@@ -44,12 +44,6 @@
             <artifactId>guava</artifactId>
             <version>${guava.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${org.assertj.core.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>com.github.dpaukov</groupId>
             <artifactId>combinatoricslib3</artifactId>
@@ -65,7 +59,6 @@
 
     <properties>
         <commons-math3.version>3.6.1</commons-math3.version>
-        <org.assertj.core.version>3.9.0</org.assertj.core.version>
         <guava.version>27.0.1-jre</guava.version>
         <combinatoricslib3.version>3.3.0</combinatoricslib3.version>
         <ejml.version>0.38</ejml.version>
diff --git a/core-java-modules/core-java-lang-math/pom.xml b/core-java-modules/core-java-lang-math/pom.xml
index 2cc9b90fa4..37550b67d8 100644
--- a/core-java-modules/core-java-lang-math/pom.xml
+++ b/core-java-modules/core-java-lang-math/pom.xml
@@ -14,16 +14,6 @@
         <version>0.0.1-SNAPSHOT</version>
     </parent>
 
-    <dependencies>
-        <!-- test scoped -->
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
-    </dependencies>
-
     <build>
         <finalName>core-java-lang-math</finalName>
         <resources>
@@ -34,9 +24,4 @@
         </resources>
     </build>
 
-    <properties>
-        <!-- testing -->
-        <assertj.version>3.6.1</assertj.version>
-    </properties>
-
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-lang-oop-constructors/pom.xml b/core-java-modules/core-java-lang-oop-constructors/pom.xml
index 5635059fa9..061b3c08de 100644
--- a/core-java-modules/core-java-lang-oop-constructors/pom.xml
+++ b/core-java-modules/core-java-lang-oop-constructors/pom.xml
@@ -13,17 +13,4 @@
         <version>0.0.1-SNAPSHOT</version>
     </parent>
 
-    <dependencies>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj-core.version}</version>
-            <scope>test</scope>
-        </dependency>
-    </dependencies>
-
-    <properties>
-        <assertj-core.version>3.10.0</assertj-core.version>
-    </properties>
-
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-lang-oop-inheritance/pom.xml b/core-java-modules/core-java-lang-oop-inheritance/pom.xml
index e0272fb94e..4fc7e14d84 100644
--- a/core-java-modules/core-java-lang-oop-inheritance/pom.xml
+++ b/core-java-modules/core-java-lang-oop-inheritance/pom.xml
@@ -13,17 +13,4 @@
         <version>0.0.1-SNAPSHOT</version>
     </parent>
 
-    <dependencies>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj-core.version}</version>
-            <scope>test</scope>
-        </dependency>
-    </dependencies>
-
-    <properties>
-        <assertj-core.version>3.10.0</assertj-core.version>
-    </properties>
-
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-lang-oop-methods/pom.xml b/core-java-modules/core-java-lang-oop-methods/pom.xml
index 938b457872..e57b51b7bd 100644
--- a/core-java-modules/core-java-lang-oop-methods/pom.xml
+++ b/core-java-modules/core-java-lang-oop-methods/pom.xml
@@ -24,12 +24,6 @@
             <artifactId>commons-lang</artifactId>
             <version>${commons-lang.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj-core.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>nl.jqno.equalsverifier</groupId>
             <artifactId>equalsverifier</artifactId>
@@ -40,7 +34,6 @@
 
     <properties>
         <lombok.version>1.18.12</lombok.version>
-        <assertj-core.version>3.10.0</assertj-core.version>
         <equalsverifier.version>3.0.3</equalsverifier.version>
     </properties>
 
diff --git a/core-java-modules/core-java-lang-oop-modifiers/pom.xml b/core-java-modules/core-java-lang-oop-modifiers/pom.xml
index 70c70608eb..109a87c41e 100644
--- a/core-java-modules/core-java-lang-oop-modifiers/pom.xml
+++ b/core-java-modules/core-java-lang-oop-modifiers/pom.xml
@@ -14,12 +14,6 @@
     </parent>
 
     <dependencies>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj-core.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>com.h2database</groupId>
             <artifactId>h2</artifactId>
@@ -28,8 +22,4 @@
         </dependency>
     </dependencies>
 
-    <properties>
-        <assertj-core.version>3.10.0</assertj-core.version>
-    </properties>
-
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-lang-oop-patterns/pom.xml b/core-java-modules/core-java-lang-oop-patterns/pom.xml
index 8b8b4a7b46..4b89584def 100644
--- a/core-java-modules/core-java-lang-oop-patterns/pom.xml
+++ b/core-java-modules/core-java-lang-oop-patterns/pom.xml
@@ -29,17 +29,10 @@
             <artifactId>gson</artifactId>
             <version>${gson.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj-core.version}</version>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
     <properties>
         <gson.version>2.8.2</gson.version>
-        <assertj-core.version>3.10.0</assertj-core.version>
     </properties>
 
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-lang-operators-2/pom.xml b/core-java-modules/core-java-lang-operators-2/pom.xml
index 1779b7384c..724dad95ee 100644
--- a/core-java-modules/core-java-lang-operators-2/pom.xml
+++ b/core-java-modules/core-java-lang-operators-2/pom.xml
@@ -21,13 +21,6 @@
             <version>${lombok.version}</version>
             <scope>provided</scope>
         </dependency>
-        <!-- test scoped -->
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj-core.version}</version>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
     <build>
@@ -40,9 +33,4 @@
         </resources>
     </build>
 
-    <properties>
-        <!-- testing -->
-        <assertj-core.version>3.10.0</assertj-core.version>
-    </properties>
-
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-lang-operators/pom.xml b/core-java-modules/core-java-lang-operators/pom.xml
index 63f42917b8..c61fb81354 100644
--- a/core-java-modules/core-java-lang-operators/pom.xml
+++ b/core-java-modules/core-java-lang-operators/pom.xml
@@ -21,13 +21,6 @@
             <version>${lombok.version}</version>
             <scope>provided</scope>
         </dependency>
-        <!-- test scoped -->
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj-core.version}</version>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
     <build>
@@ -40,9 +33,4 @@
         </resources>
     </build>
 
-    <properties>
-        <!-- testing -->
-        <assertj-core.version>3.10.0</assertj-core.version>
-    </properties>
-
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-lang-syntax/pom.xml b/core-java-modules/core-java-lang-syntax/pom.xml
index da7d56de7b..7cdbc40fbc 100644
--- a/core-java-modules/core-java-lang-syntax/pom.xml
+++ b/core-java-modules/core-java-lang-syntax/pom.xml
@@ -26,13 +26,6 @@
             <artifactId>log4j-over-slf4j</artifactId>
             <version>${org.slf4j.version}</version>
         </dependency>
-        <!-- test scoped -->
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj-core.version}</version>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
     <build>
@@ -45,9 +38,4 @@
         </resources>
     </build>
 
-    <properties>
-        <!-- testing -->
-        <assertj-core.version>3.10.0</assertj-core.version>
-    </properties>
-
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-networking-3/pom.xml b/core-java-modules/core-java-networking-3/pom.xml
index 2fd97ef831..ee822e57cb 100644
--- a/core-java-modules/core-java-networking-3/pom.xml
+++ b/core-java-modules/core-java-networking-3/pom.xml
@@ -29,12 +29,6 @@
             <artifactId>tomcat-embed-core</artifactId>
             <version>${tomcat.embeded.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>com.sun.mail</groupId>
             <artifactId>javax.mail</artifactId>
@@ -76,7 +70,6 @@
         <spring.core.version>5.2.8.RELEASE</spring.core.version>
         <jetty.embeded.version>9.4.31.v20200723</jetty.embeded.version>
         <tomcat.embeded.version>10.0.0-M7</tomcat.embeded.version>
-        <assertj.version>3.11.1</assertj.version>
         <seancfoley.ipaddress.version>5.3.3</seancfoley.ipaddress.version>
         <jgonian.commons-ip-math.version>1.32</jgonian.commons-ip-math.version>
         <googlecode.ipv6.version>0.17</googlecode.ipv6.version>
diff --git a/core-java-modules/core-java-nio-2/pom.xml b/core-java-modules/core-java-nio-2/pom.xml
index 9d5e267b46..eb56c2bf68 100644
--- a/core-java-modules/core-java-nio-2/pom.xml
+++ b/core-java-modules/core-java-nio-2/pom.xml
@@ -14,17 +14,4 @@
         <version>0.0.1-SNAPSHOT</version>
     </parent>
 
-    <dependencies>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
-    </dependencies>
-
-    <properties>
-        <assertj.version>3.6.1</assertj.version>
-    </properties>
-
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-optional/pom.xml b/core-java-modules/core-java-optional/pom.xml
index dd5217df74..d04763598d 100644
--- a/core-java-modules/core-java-optional/pom.xml
+++ b/core-java-modules/core-java-optional/pom.xml
@@ -56,18 +56,11 @@
             <version>${rest-assured.version}</version>
             <scope>test</scope>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
     <properties>
         <hibernate.core.version>5.4.0.Final</hibernate.core.version>
         <guava.version>27.1-jre</guava.version>
-        <assertj.version>3.10.0</assertj.version>
         <rest-assured.version>3.1.1</rest-assured.version>
     </properties>
 
diff --git a/core-java-modules/core-java-os/pom.xml b/core-java-modules/core-java-os/pom.xml
index c0eac46db8..970c8a562a 100644
--- a/core-java-modules/core-java-os/pom.xml
+++ b/core-java-modules/core-java-os/pom.xml
@@ -35,13 +35,6 @@
 			<artifactId>log4j</artifactId>
 			<version>${log4j.version}</version>
 		</dependency>
-		<!-- test scoped -->
-		<dependency>
-			<groupId>org.assertj</groupId>
-			<artifactId>assertj-core</artifactId>
-			<version>${assertj.version}</version>
-			<scope>test</scope>
-		</dependency>
 		<dependency>
 			<groupId>org.unix4j</groupId>
 			<artifactId>unix4j-command</artifactId>
@@ -76,11 +69,8 @@
     </build>
 
     <properties>
-        <!-- util -->
         <commons-collections4.version>4.1</commons-collections4.version>
         <collections-generic.version>4.01</collections-generic.version>
-        <!-- testing -->
-        <assertj.version>3.6.1</assertj.version>
         <asspectj.version>1.8.9</asspectj.version>
         <maven.compiler.source>1.9</maven.compiler.source>
         <maven.compiler.target>1.9</maven.compiler.target>
diff --git a/core-java-modules/core-java-reflection/pom.xml b/core-java-modules/core-java-reflection/pom.xml
index 32777e228f..1706bf3c45 100644
--- a/core-java-modules/core-java-reflection/pom.xml
+++ b/core-java-modules/core-java-reflection/pom.xml
@@ -14,14 +14,6 @@
         <version>0.0.1-SNAPSHOT</version>
     </parent>
 
-    <dependencies>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj-core.version}</version>
-        </dependency>
-    </dependencies>
-
     <build>
         <finalName>core-java-reflection</finalName>
         <resources>
@@ -45,7 +37,6 @@
     </build>
 
     <properties>
-        <assertj-core.version>3.10.0</assertj-core.version>
         <source.version>1.8</source.version>
         <target.version>1.8</target.version>
     </properties>
diff --git a/core-java-modules/core-java-regex-2/pom.xml b/core-java-modules/core-java-regex-2/pom.xml
index a47c0ff357..ae9385e63c 100644
--- a/core-java-modules/core-java-regex-2/pom.xml
+++ b/core-java-modules/core-java-regex-2/pom.xml
@@ -14,17 +14,4 @@
         <version>0.0.1-SNAPSHOT</version>
     </parent>
 
-    <dependencies>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj-core.version}</version>
-            <scope>test</scope>
-        </dependency>
-    </dependencies>
-
-    <properties>
-        <assertj-core.version>3.15.0</assertj-core.version>
-    </properties>
-
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-regex/pom.xml b/core-java-modules/core-java-regex/pom.xml
index 3fb63fb42a..93f3ae3cdb 100644
--- a/core-java-modules/core-java-regex/pom.xml
+++ b/core-java-modules/core-java-regex/pom.xml
@@ -25,12 +25,6 @@
             <artifactId>jmh-generator-annprocess</artifactId>
             <version>${jmh-core.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj-core.version}</version>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
     <build>
@@ -43,8 +37,4 @@
         </resources>
     </build>
 
-    <properties>
-        <assertj-core.version>3.15.0</assertj-core.version>
-    </properties>
-
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-security-2/pom.xml b/core-java-modules/core-java-security-2/pom.xml
index 8de12c0c46..7a354ee9e2 100644
--- a/core-java-modules/core-java-security-2/pom.xml
+++ b/core-java-modules/core-java-security-2/pom.xml
@@ -25,13 +25,6 @@
             <artifactId>bcprov-jdk15on</artifactId>
             <version>${bouncycastle.version}</version>
         </dependency>
-        <!-- test scoped -->
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj-core.version}</version>
-            <scope>test</scope>
-        </dependency>
         <!-- https://mvnrepository.com/artifact/javax.xml.bind/jaxb-api -->
         <dependency>
             <groupId>javax.xml.bind</groupId>
@@ -41,11 +34,8 @@
     </dependencies>
 
     <properties>
-        <!-- util -->
         <bouncycastle.version>1.60</bouncycastle.version>
         <commons-codec.version>1.11</commons-codec.version>
-        <!-- testing -->
-        <assertj-core.version>3.18.0</assertj-core.version>
         <jaxb-api.version>2.3.1</jaxb-api.version>
     </properties>
 
diff --git a/core-java-modules/core-java-security-3/pom.xml b/core-java-modules/core-java-security-3/pom.xml
index a0e73a1e29..3cd546e697 100644
--- a/core-java-modules/core-java-security-3/pom.xml
+++ b/core-java-modules/core-java-security-3/pom.xml
@@ -25,13 +25,6 @@
             <artifactId>bcprov-jdk15on</artifactId>
             <version>${bouncycastle.version}</version>
         </dependency>
-        <!-- test scoped -->
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj-core.version}</version>
-            <scope>test</scope>
-        </dependency>
         <!-- https://mvnrepository.com/artifact/javax.xml.bind/jaxb-api -->
         <dependency>
             <groupId>javax.xml.bind</groupId>
@@ -41,11 +34,8 @@
     </dependencies>
 
     <properties>
-        <!-- util -->
         <bouncycastle.version>1.60</bouncycastle.version>
         <commons-codec.version>1.11</commons-codec.version>
-        <!-- testing -->
-        <assertj-core.version>3.18.0</assertj-core.version>
         <jaxb-api.version>2.3.1</jaxb-api.version>
     </properties>
 
diff --git a/core-java-modules/core-java-security-algorithms/pom.xml b/core-java-modules/core-java-security-algorithms/pom.xml
index db1bf09ead..967ddc103e 100644
--- a/core-java-modules/core-java-security-algorithms/pom.xml
+++ b/core-java-modules/core-java-security-algorithms/pom.xml
@@ -25,13 +25,6 @@
             <artifactId>bcprov-jdk15on</artifactId>
             <version>${bouncycastle.version}</version>
         </dependency>
-        <!-- test scoped -->
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj-core.version}</version>
-            <scope>test</scope>
-        </dependency>
         <!-- https://mvnrepository.com/artifact/javax.xml.bind/jaxb-api -->
         <dependency>
             <groupId>javax.xml.bind</groupId>
@@ -41,11 +34,8 @@
     </dependencies>
 
     <properties>
-        <!-- util -->
         <bouncycastle.version>1.60</bouncycastle.version>
         <commons-codec.version>1.11</commons-codec.version>
-        <!-- testing -->
-        <assertj-core.version>3.18.0</assertj-core.version>
         <jaxb-api.version>2.3.1</jaxb-api.version>
     </properties>
 
diff --git a/core-java-modules/core-java-security/pom.xml b/core-java-modules/core-java-security/pom.xml
index daba990776..b36de5ac4c 100644
--- a/core-java-modules/core-java-security/pom.xml
+++ b/core-java-modules/core-java-security/pom.xml
@@ -14,19 +14,4 @@
         <version>0.0.1-SNAPSHOT</version>
     </parent>
 
-    <dependencies>
-        <!-- test scoped -->
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj-core.version}</version>
-            <scope>test</scope>
-        </dependency>
-    </dependencies>
-
-    <properties>
-        <!-- testing -->
-        <assertj-core.version>3.10.0</assertj-core.version>
-    </properties>
-
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-serialization/pom.xml b/core-java-modules/core-java-serialization/pom.xml
index 754dcd434b..0ce5785fd9 100644
--- a/core-java-modules/core-java-serialization/pom.xml
+++ b/core-java-modules/core-java-serialization/pom.xml
@@ -43,13 +43,6 @@
             <artifactId>log4j-over-slf4j</artifactId>
             <version>${org.slf4j.version}</version>
         </dependency>
-        <!-- test scoped -->
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj-core.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-core</artifactId>
@@ -177,16 +170,10 @@
     </profiles>
 
     <properties>
-        <!-- util -->
         <unix4j.version>0.4</unix4j.version>
         <grep4j.version>1.8.7</grep4j.version>
-        <!-- testing -->
-        <assertj-core.version>3.10.0</assertj-core.version>
-        <!-- maven plugins -->
         <javamoney.moneta.version>1.1</javamoney.moneta.version>
         <maven-javadoc-plugin.version>3.0.0-M1</maven-javadoc-plugin.version>
-<!--        <source.version>1.8</source.version>-->
-<!--        <target.version>1.8</target.version>-->
         <spring.core.version>4.3.20.RELEASE</spring.core.version>
     </properties>
 
diff --git a/core-java-modules/core-java-streams-2/pom.xml b/core-java-modules/core-java-streams-2/pom.xml
index 08b82bcc11..c8fa83c55a 100644
--- a/core-java-modules/core-java-streams-2/pom.xml
+++ b/core-java-modules/core-java-streams-2/pom.xml
@@ -30,18 +30,11 @@
             <artifactId>log4j</artifactId>
             <version>${log4j.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
     <properties>
         <maven.compiler.source>1.9</maven.compiler.source>
         <maven.compiler.target>1.9</maven.compiler.target>
-        <assertj.version>3.11.1</assertj.version>
     </properties>
 
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-streams-3/pom.xml b/core-java-modules/core-java-streams-3/pom.xml
index 6ace96fc4d..c2dfdc392b 100644
--- a/core-java-modules/core-java-streams-3/pom.xml
+++ b/core-java-modules/core-java-streams-3/pom.xml
@@ -37,13 +37,6 @@
             <version>${jmh-generator.version}</version>
             <scope>test</scope>
         </dependency>
-        <!-- test scoped -->
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
     <build>
@@ -75,8 +68,6 @@
 
     <properties>
         <lombok.version>1.18.20</lombok.version>
-        <!-- testing -->
-        <assertj.version>3.6.1</assertj.version>
     </properties>
 
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-streams/pom.xml b/core-java-modules/core-java-streams/pom.xml
index 4862672c8a..a6bb827e77 100644
--- a/core-java-modules/core-java-streams/pom.xml
+++ b/core-java-modules/core-java-streams/pom.xml
@@ -43,13 +43,6 @@
             <version>${lombok.version}</version>
             <scope>provided</scope>
         </dependency>
-        <!-- test scoped -->
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>com.codepoetics</groupId>
             <artifactId>protonpack</artifactId>
@@ -105,14 +98,11 @@
     </build>
 
     <properties>
-        <!-- util -->
         <vavr.version>0.9.0</vavr.version>
         <protonpack.version>1.15</protonpack.version>
         <streamex.version>0.6.5</streamex.version>
         <joda.version>2.10</joda.version>
         <throwing-function.version>1.3</throwing-function.version>
-        <!-- testing -->
-        <assertj.version>3.11.1</assertj.version>
         <asspectj.version>1.8.9</asspectj.version>
         <maven-compiler-plugin.version>3.1</maven-compiler-plugin.version>
         <maven.compiler.source>1.8</maven.compiler.source>
diff --git a/core-java-modules/core-java-string-algorithms-2/pom.xml b/core-java-modules/core-java-string-algorithms-2/pom.xml
index 4b0d55508f..9fbe10865d 100644
--- a/core-java-modules/core-java-string-algorithms-2/pom.xml
+++ b/core-java-modules/core-java-string-algorithms-2/pom.xml
@@ -35,12 +35,6 @@
             <artifactId>jmh-generator-annprocess</artifactId>
             <version>${jmh-generator.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>org.bitbucket.cowwoc</groupId>
             <artifactId>diff-match-patch</artifactId>
@@ -60,7 +54,6 @@
     </build>
 
     <properties>
-        <assertj.version>3.6.1</assertj.version>
         <diff-match-path.version>1.2</diff-match-path.version>
     </properties>
 
diff --git a/core-java-modules/core-java-string-algorithms-3/pom.xml b/core-java-modules/core-java-string-algorithms-3/pom.xml
index 88a3029cf1..6700e9ba95 100644
--- a/core-java-modules/core-java-string-algorithms-3/pom.xml
+++ b/core-java-modules/core-java-string-algorithms-3/pom.xml
@@ -14,13 +14,6 @@
     </parent>
 
     <dependencies>
-        <!-- test scoped -->
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>com.google.guava</groupId>
             <artifactId>guava</artifactId>
@@ -56,7 +49,6 @@
     </build>
 
     <properties>
-        <assertj.version>3.6.1</assertj.version>
         <guava.version>28.1-jre</guava.version>
         <validator.version>1.7</validator.version>
     </properties>
diff --git a/core-java-modules/core-java-string-algorithms/pom.xml b/core-java-modules/core-java-string-algorithms/pom.xml
index 9fea569b29..07018c7694 100644
--- a/core-java-modules/core-java-string-algorithms/pom.xml
+++ b/core-java-modules/core-java-string-algorithms/pom.xml
@@ -45,12 +45,6 @@
             <artifactId>emoji-java</artifactId>
             <version>${emoji-java.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
     <build>
@@ -66,7 +60,6 @@
     <properties>
         <guava.version>27.0.1-jre</guava.version>
         <ahocorasick.version>0.4.0</ahocorasick.version>
-        <assertj.version>3.6.1</assertj.version>
         <emoji-java.version>4.0.0</emoji-java.version>
     </properties>
 
diff --git a/core-java-modules/core-java-string-conversions-2/pom.xml b/core-java-modules/core-java-string-conversions-2/pom.xml
index 3e03f4c016..f97443d9ca 100644
--- a/core-java-modules/core-java-string-conversions-2/pom.xml
+++ b/core-java-modules/core-java-string-conversions-2/pom.xml
@@ -41,12 +41,6 @@
             <artifactId>commons-text</artifactId>
             <version>${commons-text.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
     <build>
@@ -61,7 +55,6 @@
     
     <properties>
         <icu.version>64.2</icu.version>
-        <assertj.version>3.12.2</assertj.version>
         <commons-text.version>1.9</commons-text.version>
         <guava.version>30.1.1-jre</guava.version>
     </properties>
diff --git a/core-java-modules/core-java-string-conversions/pom.xml b/core-java-modules/core-java-string-conversions/pom.xml
index 1047e3e7c3..148f04101f 100644
--- a/core-java-modules/core-java-string-conversions/pom.xml
+++ b/core-java-modules/core-java-string-conversions/pom.xml
@@ -35,13 +35,6 @@
             <artifactId>guava</artifactId>
             <version>${guava.version}</version>
         </dependency>
-        <!-- test scoped -->
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>org.hamcrest</groupId>
             <artifactId>hamcrest</artifactId>
@@ -62,7 +55,6 @@
 
     <properties>
         <icu4j.version>61.1</icu4j.version>
-        <assertj.version>3.6.1</assertj.version>
     </properties>
 
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-string-operations-2/pom.xml b/core-java-modules/core-java-string-operations-2/pom.xml
index db8f78da70..0d31486759 100644
--- a/core-java-modules/core-java-string-operations-2/pom.xml
+++ b/core-java-modules/core-java-string-operations-2/pom.xml
@@ -66,12 +66,6 @@
             <artifactId>commons-codec</artifactId>
             <version>${commons-codec.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
     <build>
@@ -108,7 +102,6 @@
     </build>
 
     <properties>
-        <assertj.version>3.6.1</assertj.version>
         <validation-api.version>2.0.0.Final</validation-api.version>
         <guava.version>28.2-jre</guava.version>
         <hibernate-validator.version>6.0.2.Final</hibernate-validator.version>
diff --git a/core-java-modules/core-java-string-operations-3/pom.xml b/core-java-modules/core-java-string-operations-3/pom.xml
index 2567f776b1..1b1237a8c3 100644
--- a/core-java-modules/core-java-string-operations-3/pom.xml
+++ b/core-java-modules/core-java-string-operations-3/pom.xml
@@ -26,12 +26,6 @@
             <artifactId>commons-lang3</artifactId>
             <version>${apache-commons-lang3.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>org.apache.maven</groupId>
             <artifactId>maven-artifact</artifactId>
@@ -82,7 +76,6 @@
     <properties>
         <maven.compiler.source>11</maven.compiler.source>
         <maven.compiler.target>11</maven.compiler.target>
-        <assertj.version>3.6.1</assertj.version>
         <spring-core.version>5.3.9</spring-core.version>
         <apache-commons-lang3.version>3.12.0</apache-commons-lang3.version>
         <guava.version>31.0.1-jre</guava.version>
diff --git a/core-java-modules/core-java-string-operations-4/pom.xml b/core-java-modules/core-java-string-operations-4/pom.xml
index ea6bdcd849..d0e5ae29d5 100644
--- a/core-java-modules/core-java-string-operations-4/pom.xml
+++ b/core-java-modules/core-java-string-operations-4/pom.xml
@@ -16,12 +16,6 @@
     </parent>
 
     <dependencies>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>com.google.guava</groupId>
             <artifactId>guava</artifactId>
@@ -50,7 +44,6 @@
     <properties>
         <maven.compiler.source>11</maven.compiler.source>
         <maven.compiler.target>11</maven.compiler.target>
-        <assertj.version>3.6.1</assertj.version>
         <guava.version>31.0.1-jre</guava.version>
         <opencsv.version>4.1</opencsv.version>
     </properties>
diff --git a/core-java-modules/core-java-string-operations/pom.xml b/core-java-modules/core-java-string-operations/pom.xml
index 67ce43277e..20e4df3ba3 100644
--- a/core-java-modules/core-java-string-operations/pom.xml
+++ b/core-java-modules/core-java-string-operations/pom.xml
@@ -40,12 +40,6 @@
             <artifactId>commons-codec</artifactId>
             <version>${commons-codec.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
     <build>
@@ -59,7 +53,6 @@
     </build>
 
     <properties>
-        <assertj.version>3.6.1</assertj.version>
         <commons-codec.version>1.15</commons-codec.version>
     </properties>
 
diff --git a/core-java-modules/core-java-strings/pom.xml b/core-java-modules/core-java-strings/pom.xml
index aca0bb3346..d78cb7b92d 100644
--- a/core-java-modules/core-java-strings/pom.xml
+++ b/core-java-modules/core-java-strings/pom.xml
@@ -36,12 +36,6 @@
             <artifactId>icu4j</artifactId>
             <version>${icu4j.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
     <build>
@@ -55,7 +49,6 @@
     </build>
 
     <properties>
-        <assertj.version>3.6.1</assertj.version>
         <icu4j.version>61.1</icu4j.version>
         <maven.compiler.release>15</maven.compiler.release>
     </properties>
diff --git a/core-java-modules/core-java-sun/pom.xml b/core-java-modules/core-java-sun/pom.xml
index 4c26b59168..e959932235 100644
--- a/core-java-modules/core-java-sun/pom.xml
+++ b/core-java-modules/core-java-sun/pom.xml
@@ -15,13 +15,6 @@
     </parent>
 
     <dependencies>
-        <!-- test scoped -->
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>com.sun</groupId>
             <artifactId>tools</artifactId>
@@ -93,10 +86,7 @@
     </profiles>
 
     <properties>
-        <!-- testing -->
-        <assertj.version>3.6.1</assertj.version>
         <avaitility.version>1.7.0</avaitility.version>
-        <!-- maven plugins -->
         <sun-tools.version>1.8.0</sun-tools.version>
     </properties>
 
diff --git a/core-java-modules/core-java-time-measurements/pom.xml b/core-java-modules/core-java-time-measurements/pom.xml
index d3c351b385..e2924b5278 100644
--- a/core-java-modules/core-java-time-measurements/pom.xml
+++ b/core-java-modules/core-java-time-measurements/pom.xml
@@ -27,13 +27,6 @@
             <version>${lombok.version}</version>
             <scope>provided</scope>
         </dependency>
-        <!-- test scoped -->
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>joda-time</groupId>
             <artifactId>joda-time</artifactId>
@@ -87,12 +80,9 @@
     </build>
 
     <properties>
-        <!-- util -->
         <commons-math3.version>3.6.1</commons-math3.version>
         <joda.version>2.10</joda.version>
         <lombok.version>1.18.12</lombok.version>
-        <!-- testing -->
-        <assertj.version>3.6.1</assertj.version>
         <asspectj.version>1.8.9</asspectj.version>
         <powermock.version>2.0.7</powermock.version>
         <jmockit.version>1.44</jmockit.version>
diff --git a/core-java-modules/core-java-uuid/pom.xml b/core-java-modules/core-java-uuid/pom.xml
index a38306f269..983d0f2ba3 100644
--- a/core-java-modules/core-java-uuid/pom.xml
+++ b/core-java-modules/core-java-uuid/pom.xml
@@ -25,12 +25,6 @@
             <artifactId>log4j-over-slf4j</artifactId>
             <version>${org.slf4j.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj-core.version}</version>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
     <build>
@@ -147,7 +141,6 @@
     </profiles>
 
     <properties>
-        <assertj-core.version>3.10.0</assertj-core.version>
         <maven-javadoc-plugin.version>3.0.0-M1</maven-javadoc-plugin.version>
     </properties>
 
diff --git a/core-java-modules/core-java/pom.xml b/core-java-modules/core-java/pom.xml
index 42262be29a..8d6921b493 100644
--- a/core-java-modules/core-java/pom.xml
+++ b/core-java-modules/core-java/pom.xml
@@ -49,13 +49,6 @@
             <version>${lombok.version}</version>
             <scope>provided</scope>
         </dependency>
-        <!-- test scoped -->
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj-core.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>org.javamoney</groupId>
             <artifactId>moneta</artifactId>
@@ -185,8 +178,6 @@
         <!-- util -->
         <unix4j.version>0.4</unix4j.version>
         <grep4j.version>1.8.7</grep4j.version>
-        <!-- testing -->
-        <assertj-core.version>3.10.0</assertj-core.version>
         <!-- maven plugins -->
         <javamoney.moneta.version>1.1</javamoney.moneta.version>
         <maven-javadoc-plugin.version>3.0.0-M1</maven-javadoc-plugin.version>
diff --git a/core-java-modules/multimodulemavenproject/pom.xml b/core-java-modules/multimodulemavenproject/pom.xml
index 79d884cd86..fbafa7ebff 100644
--- a/core-java-modules/multimodulemavenproject/pom.xml
+++ b/core-java-modules/multimodulemavenproject/pom.xml
@@ -23,17 +23,6 @@
         <module>mainappmodule</module>
     </modules>
 
-    <dependencyManagement>
-        <dependencies>
-            <dependency>
-                <groupId>org.assertj</groupId>
-                <artifactId>assertj-core</artifactId>
-                <version>${assertj-core.version}</version>
-                <scope>test</scope>
-            </dependency>
-        </dependencies>
-    </dependencyManagement>
-
     <build>
         <pluginManagement>
             <plugins>
@@ -54,7 +43,6 @@
         <compiler.plugin.version>3.8.0</compiler.plugin.version>
         <source.version>1.9</source.version>
         <target.version>1.9</target.version>
-        <assertj-core.version>3.12.2</assertj-core.version>
     </properties>
 
 </project>
\ No newline at end of file