diff --git a/pom.xml b/pom.xml
index e08763b8b..33303e32b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -430,7 +430,7 @@
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>exec-maven-plugin</artifactId>
-        <version>3.1.0</version>
+        <version>3.1.1</version>
         <executions>
           <execution>
             <id>compile-tzdb</id>
@@ -969,7 +969,7 @@
           <plugin>
             <groupId>de.jutzig</groupId>
             <artifactId>github-release-plugin</artifactId>
-            <version>1.4.0</version>
+            <version>1.6.0</version>
             <executions>
               <execution>
                 <id>github-releases</id>
@@ -1044,28 +1044,28 @@
   <!-- ==================================================================== -->
   <properties>
     <!-- Plugin version numbers -->
-    <build-helper-maven-plugin.version>3.3.0</build-helper-maven-plugin.version>
-    <maven-assembly-plugin.version>3.5.0</maven-assembly-plugin.version>
+    <build-helper-maven-plugin.version>3.5.0</build-helper-maven-plugin.version>
+    <maven-assembly-plugin.version>3.6.0</maven-assembly-plugin.version>
     <maven-changes-plugin.version>2.12.1</maven-changes-plugin.version>
     <maven-checkstyle-plugin.version>2.17</maven-checkstyle-plugin.version>
-    <maven-clean-plugin.version>3.2.0</maven-clean-plugin.version>
-    <maven-compiler-plugin.version>3.11.0</maven-compiler-plugin.version>
-    <maven-deploy-plugin.version>3.1.0</maven-deploy-plugin.version>
-    <maven-dependency-plugin.version>3.5.0</maven-dependency-plugin.version>
-    <maven-enforcer-plugin.version>3.2.1</maven-enforcer-plugin.version>
+    <maven-clean-plugin.version>3.3.2</maven-clean-plugin.version>
+    <maven-compiler-plugin.version>3.12.1</maven-compiler-plugin.version>
+    <maven-deploy-plugin.version>3.1.1</maven-deploy-plugin.version>
+    <maven-dependency-plugin.version>3.6.1</maven-dependency-plugin.version>
+    <maven-enforcer-plugin.version>3.4.1</maven-enforcer-plugin.version>
     <maven-gpg-plugin.version>3.0.1</maven-gpg-plugin.version>
     <maven-install-plugin.version>3.1.1</maven-install-plugin.version>
     <maven-jar-plugin.version>3.3.0</maven-jar-plugin.version>
-    <maven-javadoc-plugin.version>3.5.0</maven-javadoc-plugin.version>
-    <maven-jxr-plugin.version>3.3.0</maven-jxr-plugin.version>
-    <maven-plugin-plugin.version>3.8.1</maven-plugin-plugin.version>
-    <maven-pmd-plugin.version>3.20.0</maven-pmd-plugin.version>
-    <maven-project-info-reports-plugin.version>3.4.2</maven-project-info-reports-plugin.version>
-    <maven-release-plugin.version>2.5.3</maven-release-plugin.version>
+    <maven-javadoc-plugin.version>3.6.3</maven-javadoc-plugin.version>
+    <maven-jxr-plugin.version>3.3.2</maven-jxr-plugin.version>
+    <maven-plugin-plugin.version>3.10.2</maven-plugin-plugin.version>
+    <maven-pmd-plugin.version>3.21.2</maven-pmd-plugin.version>
+    <maven-project-info-reports-plugin.version>3.5.0</maven-project-info-reports-plugin.version>
+    <maven-release-plugin.version>3.0.1</maven-release-plugin.version>
     <maven-repository-plugin.version>2.4</maven-repository-plugin.version>
     <maven-resources-plugin.version>3.3.1</maven-resources-plugin.version>
     <maven-site-plugin.version>3.12.1</maven-site-plugin.version>
-    <maven-source-plugin.version>3.2.1</maven-source-plugin.version>
+    <maven-source-plugin.version>3.3.0</maven-source-plugin.version>
     <!-- Stick with this version of surefire, see Java 5 comments above -->
     <maven-surefire-report-plugin.version>2.21.0</maven-surefire-report-plugin.version>
     <maven-toolchains-plugin.version>3.1.0</maven-toolchains-plugin.version>