diff --git a/gson/pom.xml b/gson/pom.xml
index 856908ae7c..76ee9de3a7 100644
--- a/gson/pom.xml
+++ b/gson/pom.xml
@@ -109,7 +109,7 @@
       <plugin>
         <groupId>com.github.wvengen</groupId>
         <artifactId>proguard-maven-plugin</artifactId>
-        <version>2.4.0</version>
+        <version>2.5.1</version>
         <executions>
           <execution>
             <phase>process-test-classes</phase>