diff --git a/rose-example/pom.xml b/rose-example/pom.xml
index 8552952..66f2a82 100644
--- a/rose-example/pom.xml
+++ b/rose-example/pom.xml
@@ -30,7 +30,7 @@
         <dependency>
             <groupId>com.google.protobuf</groupId>
             <artifactId>protobuf-java</artifactId>
-            <version>2.5.0</version>
+            <version>3.16.3</version>
         </dependency>
         <dependency>
             <groupId>com.typesafe.akka</groupId>