diff --git a/jmock-junit3/pom.xml b/jmock-junit3/pom.xml
index cdfefe7e..c975ee7c 100644
--- a/jmock-junit3/pom.xml
+++ b/jmock-junit3/pom.xml
@@ -39,7 +39,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-jar-plugin</artifactId>
-                <version>3.3.0</version>
+                <version>3.4.0</version>
                 <executions>
                     <!-- To allow jmock-junit4 tests access to AssertThat -->
                     <execution>
diff --git a/jmock/pom.xml b/jmock/pom.xml
index 6b313a84..db510b40 100644
--- a/jmock/pom.xml
+++ b/jmock/pom.xml
@@ -60,7 +60,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-jar-plugin</artifactId>
-                <version>3.3.0</version>
+                <version>3.4.0</version>
                 <executions>
                     <execution>
                         <goals>
diff --git a/pom.xml b/pom.xml
index 6592e418..1117f1ab 100644
--- a/pom.xml
+++ b/pom.xml
@@ -356,7 +356,7 @@
 
                     <plugin>
                         <artifactId>maven-jar-plugin</artifactId>
-                        <version>3.3.0</version>
+                        <version>3.4.0</version>
                         <executions>
                             <execution>
                                 <id>default-jar</id>