diff --git a/log4j2/pom.xml b/log4j2/pom.xml
index 83904f2075..124b19330f 100644
--- a/log4j2/pom.xml
+++ b/log4j2/pom.xml
@@ -18,47 +18,47 @@
         <dependency>
             <groupId>org.apache.logging.log4j</groupId>
             <artifactId>log4j-core</artifactId>
-            <version>2.7</version>
+            <version>${log4j-core.version}</version>
         </dependency>
 
         <!-- This is used by JSONLayout. -->
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
             <artifactId>jackson-databind</artifactId>
-            <version>2.8.4</version>
+            <version>${jackson.version}</version>
         </dependency>
 
         <!-- This is used by XMLLayout. -->
         <dependency>
             <groupId>com.fasterxml.jackson.dataformat</groupId>
             <artifactId>jackson-dataformat-xml</artifactId>
-            <version>2.8.4</version>
+            <version>${jackson.version}</version>
         </dependency>
 
         <!-- This is used by JDBC Appender. -->
         <dependency>
             <groupId>com.h2database</groupId>
             <artifactId>h2</artifactId>
-            <version>1.4.192</version>
+            <version>${h2.version}</version>
         </dependency>
         <dependency>
             <groupId>org.apache.commons</groupId>
             <artifactId>commons-dbcp2</artifactId>
-            <version>2.1.1</version>
+            <version>${commons-dbcp2.version}</version>
         </dependency>
 
         <!-- This is used for testing only. -->
         <dependency>
             <groupId>org.apache.logging.log4j</groupId>
             <artifactId>log4j-core</artifactId>
-            <version>2.7</version>
+            <version>${log4j-core.version}</version>
             <type>test-jar</type>
             <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.12</version>
+            <version>${junit.version}</version>
             <scope>test</scope>
         </dependency>
     </dependencies>
@@ -68,7 +68,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.5.1</version>
+                <version>${maven-compiler-plugin.version}</version>
                 <configuration>
                     <source>1.8</source>
                     <target>1.8</target>
@@ -76,4 +76,13 @@
             </plugin>
         </plugins>
     </build>
+    
+    <properties>
+        <jackson.version>2.8.5</jackson.version>
+        <h2.version>1.4.193</h2.version>
+        <commons-dbcp2.version>2.1.1</commons-dbcp2.version>
+        <log4j-core.version>2.7</log4j-core.version>
+        <junit.version>4.12</junit.version>
+        <maven-compiler-plugin.version>3.6.0</maven-compiler-plugin.version>
+    </properties>
 </project>
diff --git a/lombok/pom.xml b/lombok/pom.xml
index b816642165..24c5722db9 100644
--- a/lombok/pom.xml
+++ b/lombok/pom.xml
@@ -128,24 +128,24 @@
         <maven.compiler.target>1.8</maven.compiler.target>
 
         <!-- lombok: https://projectlombok.org/changelog.html -->
-        <lombok.version>1.16.8</lombok.version>
+        <lombok.version>1.16.12</lombok.version>
 
         <!-- various -->
         <hibernate-jpa-2.1-api.version>1.0.0.Final</hibernate-jpa-2.1-api.version>
 
         <!-- logging -->
-        <org.slf4j.version>1.7.13</org.slf4j.version>
-        <logback.version>1.1.3</logback.version>
+        <org.slf4j.version>1.7.21</org.slf4j.version>
+        <logback.version>1.1.7</logback.version>
 
         <!-- testing -->
         <junit.version>4.12</junit.version>
 
         <!-- maven plugins -->
-        <maven-compiler-plugin.version>3.5.1</maven-compiler-plugin.version>
+        <maven-compiler-plugin.version>3.6.0</maven-compiler-plugin.version>
         <maven-surefire-plugin.version>2.19.1</maven-surefire-plugin.version>
 
         <!-- delombok maven plugin -->
-        <delombok-maven-plugin.version>${lombok.version}.0</delombok-maven-plugin.version>
+        <delombok-maven-plugin.version>1.16.10.0</delombok-maven-plugin.version>
     </properties>
 
 </project>
diff --git a/mapstruct/pom.xml b/mapstruct/pom.xml
index aaa3e95f8c..72a67d19db 100644
--- a/mapstruct/pom.xml
+++ b/mapstruct/pom.xml
@@ -10,7 +10,11 @@
 	<packaging>jar</packaging>
 
 	<properties>
-		<org.mapstruct.version>1.0.0.Final</org.mapstruct.version>
+		<org.mapstruct.version>1.1.0.Final</org.mapstruct.version>
+		<junit.version>4.12</junit.version>
+		<springframework.version>4.3.4.RELEASE</springframework.version>
+		<maven-compiler-plugin.version>3.6.0</maven-compiler-plugin.version>
+		<maven-surefire-plugin.version>2.19.1</maven-surefire-plugin.version>
 	</properties>
 	<dependencies>
 		<dependency>
@@ -21,18 +25,18 @@
 		<dependency>
 			<groupId>junit</groupId>
 			<artifactId>junit</artifactId>
-			<version>4.12</version>
+			<version>${junit.version}</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework</groupId>
 			<artifactId>spring-context</artifactId>
-			<version>4.3.2.RELEASE</version>
+			<version>${springframework.version}</version>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework</groupId>
 			<artifactId>spring-test</artifactId>
-			<version>4.3.2.RELEASE</version>
+			<version>${springframework.version}</version>
 			<scope>test</scope>
 		</dependency>
 	</dependencies>
@@ -42,7 +46,7 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-compiler-plugin</artifactId>
-				<version>3.5.1</version>
+				<version>${maven-compiler-plugin.version}</version>
 				<configuration>
 					<source>1.8</source>
 					<target>1.8</target>
@@ -56,10 +60,10 @@
 				</configuration>
 			</plugin>
 		    
-		                <plugin>
+		    <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-surefire-plugin</artifactId>
-                <version>2.19.1</version>
+                <version>${maven-surefire-plugin.version}</version>
                 <configuration>
                     <excludes>
                         <exclude>**/*IntegrationTest.java</exclude>