diff --git a/ethereumj-core/pom.xml b/ethereumj-core/pom.xml
index b1dd82d4..b00cb91a 100644
--- a/ethereumj-core/pom.xml
+++ b/ethereumj-core/pom.xml
@@ -175,6 +175,7 @@ mvn clean package -Dmaven.test.skip=true
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-jar-plugin</artifactId>
+                <version>2.4</version>
                 <configuration>
                     <archive>
                         <manifest>