diff --git a/ethereum/pom.xml b/ethereum/pom.xml
index 80e1c04676..1086b09833 100644
--- a/ethereum/pom.xml
+++ b/ethereum/pom.xml
@@ -7,37 +7,18 @@
     <name>ethereum</name>
 
     <parent>
-        <artifactId>parent-spring-5</artifactId>
+        <artifactId>parent-boot-1</artifactId>
         <groupId>com.baeldung</groupId>
         <version>0.0.1-SNAPSHOT</version>
-        <relativePath>../parent-spring-5</relativePath>
+        <relativePath>../parent-boot-1</relativePath>
     </parent>
 
     <dependencies>
 
-        <!-- Spring Boot Dependencies -->
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter</artifactId>
-            <version>${spring.boot.version}</version>
-        </dependency>
-
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter-web</artifactId>
-            <version>${spring.boot.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter-tomcat</artifactId>
-            <version>${spring.boot.version}</version>
-        </dependency>
-
         <!-- Spring Dependencies -->
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-core</artifactId>
-            <version>${spring.version}</version>
         </dependency>
         <dependency>
             <groupId>org.springframework</groupId>
@@ -114,12 +95,6 @@
         </dependency>
 
         <!-- Spring Testing -->
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter-test</artifactId>
-            <scope>test</scope>
-            <version>${spring.boot.version}</version>
-        </dependency>
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-context</artifactId>
@@ -211,7 +186,7 @@
         <tomcat.version>8.5.4</tomcat.version>
         <ethereumj-core.version>1.5.0-RELEASE</ethereumj-core.version>
         <web3j.core.version>3.3.1</web3j.core.version>
-        <spring.boot.version>1.5.6.RELEASE</spring.boot.version>
+        <spring.version>5.1.9.RELEASE</spring.version>
         <mockito.version>2.21.0</mockito.version>
         <jsonpath.version>2.4.0</jsonpath.version>
         <logback.version>1.2.3</logback.version>
diff --git a/parent-boot-2/pom.xml b/parent-boot-2/pom.xml
index edc115d186..3d727a7467 100644
--- a/parent-boot-2/pom.xml
+++ b/parent-boot-2/pom.xml
@@ -78,6 +78,6 @@
         <rest-assured.version>3.3.0</rest-assured.version>
         <!-- plugins -->
         <thin.version>1.0.22.RELEASE</thin.version>
-        <spring-boot.version>2.1.7.RELEASE</spring-boot.version>
+        <spring-boot.version>2.2.0.RELEASE</spring-boot.version>
     </properties>
 </project>
diff --git a/parent-kotlin/pom.xml b/parent-kotlin/pom.xml
index bda5fb70e7..910f97c4d4 100644
--- a/parent-kotlin/pom.xml
+++ b/parent-kotlin/pom.xml
@@ -9,8 +9,8 @@
 
 	<parent>
 		<groupId>com.baeldung</groupId>
-		<artifactId>parent-modules</artifactId>
-		<version>1.0.0-SNAPSHOT</version>
+		<artifactId>parent-boot-2</artifactId>
+		<version>0.0.1-SNAPSHOT</version>
 	</parent>
 
     <repositories>
@@ -40,18 +40,6 @@
         </pluginRepository>
     </pluginRepositories>
     
-    <dependencyManagement>
-		<dependencies>
-			<dependency>
-				<groupId>org.springframework.boot</groupId>
-				<artifactId>spring-boot-dependencies</artifactId>
-				<version>2.2.0.M4</version>
-				<type>pom</type>
-				<scope>import</scope>
-			</dependency>
-		</dependencies>
-	</dependencyManagement>
-
 	<dependencies>
 		<dependency>
 			<groupId>org.jetbrains.kotlin</groupId>
diff --git a/spring-5-webflux/pom.xml b/spring-5-webflux/pom.xml
index 6887f01753..485fd8f3bf 100644
--- a/spring-5-webflux/pom.xml
+++ b/spring-5-webflux/pom.xml
@@ -16,18 +16,6 @@
         <relativePath>../parent-boot-2</relativePath>
     </parent>
 
-    <dependencyManagement>
-        <dependencies>
-            <dependency>
-                <groupId>org.springframework.boot</groupId>
-                <artifactId>spring-boot-dependencies</artifactId>
-                <version>${spring-boot.version}</version>
-                <type>pom</type>
-                <scope>import</scope>
-            </dependency>
-        </dependencies>
-    </dependencyManagement>
-
     <dependencies>
         <dependency>
             <groupId>org.springframework.boot</groupId>
@@ -97,8 +85,4 @@
             <url>https://repo.spring.io/milestone</url>
         </pluginRepository>
     </pluginRepositories>
-
-    <properties>
-        <spring-boot.version>2.2.0.M3</spring-boot.version>
-    </properties>
 </project>
diff --git a/spring-batch/pom.xml b/spring-batch/pom.xml
index 48d3baeae3..c28d7d6c89 100644
--- a/spring-batch/pom.xml
+++ b/spring-batch/pom.xml
@@ -10,8 +10,8 @@
 
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>parent-modules</artifactId>
-        <version>1.0.0-SNAPSHOT</version>
+        <artifactId>parent-boot-2</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
     </parent>
 
     <dependencies>
@@ -75,43 +75,20 @@
             <version>${opencsv.version}</version>
         </dependency>
 
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter-batch</artifactId>
-            <version>${spring.boot.version}</version>
-        </dependency>
-
         <dependency>
             <groupId>org.hsqldb</groupId>
             <artifactId>hsqldb</artifactId>
-            <version>2.5.0</version>
             <scope>runtime</scope>
         </dependency>
         
-        <dependency>
-            <groupId>org.awaitility</groupId>
-            <artifactId>awaitility</artifactId>
-            <version>${awaitility.version}</version>
-            <scope>test</scope>
-        </dependency>
-
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter-test</artifactId>
-            <version>${spring.boot.version}</version>
-            <scope>test</scope>
-        </dependency>
-
     </dependencies>
 
     <properties>
         <spring.version>5.2.0.RELEASE</spring.version>
         <spring.batch.version>4.2.0.RELEASE</spring.batch.version>
-        <spring.boot.version>2.1.9.RELEASE</spring.boot.version>
         <sqlite.version>3.15.1</sqlite.version>
         <opencsv.version>4.1</opencsv.version>
         <jaxb.version>2.3.1</jaxb.version>
-        <awaitility.version>3.1.1</awaitility.version>
     </properties>
 
 </project>
diff --git a/spring-boot-admin/pom.xml b/spring-boot-admin/pom.xml
index 1c933723e7..c553790359 100644
--- a/spring-boot-admin/pom.xml
+++ b/spring-boot-admin/pom.xml
@@ -8,8 +8,8 @@
 
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>parent-modules</artifactId>
-        <version>1.0.0-SNAPSHOT</version>
+        <artifactId>parent-boot-2</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
     </parent>
 
     <modules>
@@ -17,20 +17,4 @@
         <module>spring-boot-admin-client</module>
     </modules>
 
-    <dependencyManagement>
-        <dependencies>
-            <dependency>
-                <groupId>org.springframework.boot</groupId>
-                <artifactId>spring-boot-dependencies</artifactId>
-                <version>${spring.boot.version}</version>
-                <type>pom</type>
-                <scope>import</scope>
-            </dependency>
-        </dependencies>
-    </dependencyManagement>
-
-    <properties>
-        <spring.boot.version>2.1.8.RELEASE</spring.boot.version>
-    </properties>
-
-</project>
\ No newline at end of file
+</project>
diff --git a/spring-boot-custom-starter/greeter-spring-boot-sample-app/pom.xml b/spring-boot-custom-starter/greeter-spring-boot-sample-app/pom.xml
index 91cc41d669..1528853b0c 100644
--- a/spring-boot-custom-starter/greeter-spring-boot-sample-app/pom.xml
+++ b/spring-boot-custom-starter/greeter-spring-boot-sample-app/pom.xml
@@ -7,24 +7,12 @@
 	<name>greeter-spring-boot-sample-app</name>
 
     <parent>
-        <artifactId>spring-boot-custom-starter</artifactId>
+        <artifactId>parent-boot-1</artifactId>
         <groupId>com.baeldung</groupId>
         <version>0.0.1-SNAPSHOT</version>
         <relativePath>../../spring-boot-custom-starter</relativePath>
     </parent>
 	
-    <dependencyManagement>
-        <dependencies>
-            <dependency>
-                <groupId>org.springframework.boot</groupId>
-                <artifactId>spring-boot-dependencies</artifactId>
-                <version>${spring-boot.version}</version>
-                <type>pom</type>
-                <scope>import</scope>
-            </dependency>
-        </dependencies>
-    </dependencyManagement>
-
     <dependencies>
         <dependency>
             <groupId>com.baeldung</groupId>
@@ -51,8 +39,7 @@
 	</build>
 
     <properties>
-	    <spring-boot.version>1.5.15.RELEASE</spring-boot.version>
         <greeter-starter.version>0.0.1-SNAPSHOT</greeter-starter.version>
     </properties>
 
-</project>
\ No newline at end of file
+</project>
diff --git a/spring-boot-kotlin/pom.xml b/spring-boot-kotlin/pom.xml
index 25508c52b9..c024f3fda1 100644
--- a/spring-boot-kotlin/pom.xml
+++ b/spring-boot-kotlin/pom.xml
@@ -30,19 +30,6 @@
         </repository>
     </repositories>
 
-
-    <dependencyManagement>
-        <dependencies>
-            <dependency>
-                <groupId>org.springframework.boot</groupId>
-                <artifactId>spring-boot-dependencies</artifactId>
-                <version>${spring-boot.version}</version>
-                <type>pom</type>
-                <scope>import</scope>
-            </dependency>
-        </dependencies>
-    </dependencyManagement>
-
     <pluginRepositories>
         <pluginRepository>
             <id>spring-snapshots</id>
@@ -160,7 +147,6 @@
         <r2dbc-spi.version>1.0.0.M7</r2dbc-spi.version>
         <h2-r2dbc.version>1.0.0.BUILD-SNAPSHOT</h2-r2dbc.version>
         <kotlinx-coroutines.version>1.2.1</kotlinx-coroutines.version>
-        <spring-boot.version>2.2.0.M2</spring-boot.version>
     </properties>
 
 </project>
diff --git a/spring-boot-parent/spring-boot-with-custom-parent/pom.xml b/spring-boot-parent/spring-boot-with-custom-parent/pom.xml
index de2946fbb2..a64ebc246a 100644
--- a/spring-boot-parent/spring-boot-with-custom-parent/pom.xml
+++ b/spring-boot-parent/spring-boot-with-custom-parent/pom.xml
@@ -10,22 +10,10 @@
 
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>spring-boot-parent</artifactId>
-        <version>1.0.0-SNAPSHOT</version>
+        <artifactId>parent-boot-2</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
     </parent>
 
-    <dependencyManagement>
-        <dependencies>
-            <dependency>
-                <groupId>org.springframework.boot</groupId>
-                <artifactId>spring-boot-dependencies</artifactId>
-                <version>${spring-boot.version}</version>
-                <type>pom</type>
-                <scope>import</scope>
-            </dependency>
-        </dependencies>
-    </dependencyManagement>
-
     <dependencies>
         <dependency>
             <groupId>org.springframework.boot</groupId>
@@ -35,7 +23,6 @@
 
     <properties>
         <java.version>1.8</java.version>
-        <spring-boot.version>2.1.5.RELEASE</spring-boot.version>
     </properties>
 
 </project>
diff --git a/spring-ejb/pom.xml b/spring-ejb/pom.xml
index 712bfc66ab..126bace9bd 100755
--- a/spring-ejb/pom.xml
+++ b/spring-ejb/pom.xml
@@ -10,8 +10,8 @@
 
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>parent-modules</artifactId>
-        <version>1.0.0-SNAPSHOT</version>
+        <artifactId>parent-boot-2</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
     </parent>
 
     <repositories>
diff --git a/spring-ejb/spring-ejb-client/pom.xml b/spring-ejb/spring-ejb-client/pom.xml
index e0348d5ae3..8d4cdd37e8 100644
--- a/spring-ejb/spring-ejb-client/pom.xml
+++ b/spring-ejb/spring-ejb-client/pom.xml
@@ -13,18 +13,6 @@
         <version>1.0.0-SNAPSHOT</version>
     </parent>
 	
-	<dependencyManagement>
-        <dependencies>
-            <dependency>
-                <groupId>org.springframework.boot</groupId>
-                <artifactId>spring-boot-dependencies</artifactId>
-       			<version>2.0.4.RELEASE</version>
-                <type>pom</type>
-                <scope>import</scope>
-            </dependency>
-        </dependencies>
-    </dependencyManagement>
-
     <dependencies>
         <dependency>
             <groupId>org.springframework.boot</groupId>
diff --git a/spring-jinq/pom.xml b/spring-jinq/pom.xml
index f142b3ee2f..1661614fa0 100644
--- a/spring-jinq/pom.xml
+++ b/spring-jinq/pom.xml
@@ -9,8 +9,8 @@
 
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>parent-modules</artifactId>
-        <version>1.0.0-SNAPSHOT</version>
+        <artifactId>parent-boot-1</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
     </parent>
 
     <dependencies>
@@ -59,20 +59,7 @@
         </plugins>
     </build>
 
-    <dependencyManagement>
-        <dependencies>
-            <dependency>
-                <groupId>org.springframework.boot</groupId>
-                <artifactId>spring-boot-dependencies</artifactId>
-                <version>${spring-boot.version}</version>
-                <type>pom</type>
-                <scope>import</scope>
-            </dependency>
-        </dependencies>
-    </dependencyManagement>
-
     <properties>
-        <spring-boot.version>1.5.9.RELEASE</spring-boot.version>
         <jinq.version>1.8.22</jinq.version>
     </properties>
 
diff --git a/testing-modules/load-testing-comparison/pom.xml b/testing-modules/load-testing-comparison/pom.xml
index 2c53657481..6e307a24ca 100644
--- a/testing-modules/load-testing-comparison/pom.xml
+++ b/testing-modules/load-testing-comparison/pom.xml
@@ -7,10 +7,10 @@
 	<name>load-testing-comparison</name>
 	
     <parent>
-        <artifactId>parent-modules</artifactId>
+        <artifactId>parent-boot-2</artifactId>
         <groupId>com.baeldung</groupId>
-        <version>1.0.0-SNAPSHOT</version>
-        <relativePath>../../pom.xml</relativePath>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../../parent-boot-2</relativePath>
     </parent>
 
     <dependencies>
@@ -44,38 +44,6 @@
             <artifactId>jackson-databind</artifactId>
             <version>${jackson.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter</artifactId>
-            <version>${spring.boot.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter-web</artifactId>
-            <version>${spring.boot.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter-data-jpa</artifactId>
-            <version>${spring.boot.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter-test</artifactId>
-            <version>${spring.boot.version}</version>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>com.h2database</groupId>
-            <artifactId>h2</artifactId>
-            <version>${h2.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.projectlombok</groupId>
-            <artifactId>lombok</artifactId>
-            <version>${lombok.version}</version>
-            <scope>compile</scope>
-        </dependency>
     </dependencies>
 
     <build>
@@ -144,7 +112,6 @@
         <gatling-maven-plugin.version>2.2.1</gatling-maven-plugin.version> <!--2.2.1 --> <!--2.2.4 -->
         <jmeter.version>5.0</jmeter.version>
         <grinder.version>3.11</grinder.version>
-        <spring.boot.version>2.0.5.RELEASE</spring.boot.version>
     </properties>
     
-</project>
\ No newline at end of file
+</project>