diff --git a/examples/intkey_java/pom.xml b/examples/intkey_java/pom.xml
index 25382bdd..e1e48db2 100644
--- a/examples/intkey_java/pom.xml
+++ b/examples/intkey_java/pom.xml
@@ -81,7 +81,7 @@
         <dependency>
             <groupId>com.google.protobuf</groupId>
             <artifactId>protobuf-java</artifactId>
-            <version>3.16.1</version>
+            <version>3.16.3</version>
         </dependency>
         <dependency>
           <groupId>co.nstant.in</groupId>