diff --git a/org.eclipse.sisu.plexus/pom.xml b/org.eclipse.sisu.plexus/pom.xml
index 9d71226..d00d88a 100644
--- a/org.eclipse.sisu.plexus/pom.xml
+++ b/org.eclipse.sisu.plexus/pom.xml
@@ -86,7 +86,7 @@
     <dependency>
       <groupId>org.codehaus.plexus</groupId>
       <artifactId>plexus-utils</artifactId>
-      <version>4.0.0</version>
+      <version>4.0.1</version>
     </dependency>
     <dependency>
       <groupId>org.codehaus.plexus</groupId>
diff --git a/pom.xml b/pom.xml
index 493a322..0ca5aef 100644
--- a/pom.xml
+++ b/pom.xml
@@ -118,8 +118,8 @@
   <properties>
     <maven.compiler.release>8</maven.compiler.release>
     <!-- Set to same version as release target for consistency -->
-    <maven.compiler.source>1.${maven.compiler.release}</maven.compiler.source>
-    <maven.compiler.target>1.${maven.compiler.release}</maven.compiler.target>
+    <maven.compiler.source>${maven.compiler.release}</maven.compiler.source>
+    <maven.compiler.target>${maven.compiler.release}</maven.compiler.target>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 
     <mavenBuildVersion>3.6.3</mavenBuildVersion>
@@ -132,7 +132,7 @@
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-enforcer-plugin</artifactId>
-          <version>3.2.1</version>
+          <version>3.4.1</version>
           <configuration>
             <rules>
               <enforceBytecodeVersion>
@@ -164,14 +164,14 @@
             <dependency>
               <groupId>org.codehaus.mojo</groupId>
               <artifactId>extra-enforcer-rules</artifactId>
-              <version>1.6.1</version>
+              <version>1.8.0</version>
             </dependency>
           </dependencies>
         </plugin>
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-clean-plugin</artifactId>
-          <version>3.2.0</version>
+          <version>3.3.2</version>
         </plugin>
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
@@ -181,37 +181,38 @@
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-compiler-plugin</artifactId>
-          <version>3.11.0</version>
+          <version>3.13.0</version>
           <configuration>
             <proc>none</proc>
+            <showDeprecation>true</showDeprecation>
           </configuration>
         </plugin>
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-dependency-plugin</artifactId>
-          <version>3.5.0</version>
+          <version>3.6.1</version>
         </plugin>
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-surefire-plugin</artifactId>
-          <version>3.0.0</version>
+          <version>3.2.5</version>
           <dependencies>
             <dependency>
               <groupId>org.apache.maven.surefire</groupId>
               <artifactId>surefire-junit47</artifactId>
-              <version>3.0.0</version>
+              <version>3.2.5</version>
             </dependency>
           </dependencies>
         </plugin>
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-failsafe-plugin</artifactId>
-          <version>3.0.0</version>
+          <version>3.2.5</version>
           <dependencies>
             <dependency>
               <groupId>org.apache.maven.surefire</groupId>
               <artifactId>surefire-junit47</artifactId>
-              <version>3.0.0</version>
+              <version>3.2.5</version>
             </dependency>
           </dependencies>
         </plugin>
@@ -239,7 +240,7 @@ Bundle-DocURL: http://www.eclipse.org/sisu/
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-jar-plugin</artifactId>
-          <version>3.3.0</version>
+          <version>3.4.1</version>
           <executions>
             <execution>
               <id>default-jar</id>
@@ -254,22 +255,22 @@ Bundle-DocURL: http://www.eclipse.org/sisu/
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-install-plugin</artifactId>
-          <version>3.1.1</version>
+          <version>3.1.2</version>
         </plugin>
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-deploy-plugin</artifactId>
-          <version>3.1.1</version>
+          <version>3.1.2</version>
         </plugin>
         <plugin>
           <groupId>org.jacoco</groupId>
           <artifactId>jacoco-maven-plugin</artifactId>
-          <version>0.8.8</version>
+          <version>0.8.12</version>
         </plugin>
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-release-plugin</artifactId>
-          <version>3.0.0</version>
+          <version>3.0.1</version>
           <configuration>
             <mavenExecutorId>forked-path</mavenExecutorId>
             <useReleaseProfile>false</useReleaseProfile>
@@ -289,7 +290,7 @@ Bundle-DocURL: http://www.eclipse.org/sisu/
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-source-plugin</artifactId>
-          <version>3.2.1</version>
+          <version>3.3.1</version>
           <executions>
             <execution>
               <id>attach-sources</id>
@@ -302,7 +303,7 @@ Bundle-DocURL: http://www.eclipse.org/sisu/
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-javadoc-plugin</artifactId>
-          <version>3.5.0</version>
+          <version>3.6.3</version>
           <configuration>
             <overview>${basedir}/overview.html</overview>
             <excludePackageNames>*.internal</excludePackageNames>
@@ -322,7 +323,7 @@ Bundle-DocURL: http://www.eclipse.org/sisu/
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-gpg-plugin</artifactId>
-          <version>3.0.1</version>
+          <version>3.2.4</version>
           <configuration>
             <passphrase>${gpg.passphrase}</passphrase>
             <useAgent>true</useAgent>
@@ -350,7 +351,7 @@ Bundle-DocURL: http://www.eclipse.org/sisu/
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-project-info-reports-plugin</artifactId>
-          <version>3.4.2</version>
+          <version>3.5.0</version>
         </plugin>
         <plugin>
           <groupId>com.diffplug.spotless</groupId>