diff --git a/dk-example-chat-protobuf/pom.xml b/dk-example-chat-protobuf/pom.xml
index c4c7dde..4171970 100644
--- a/dk-example-chat-protobuf/pom.xml
+++ b/dk-example-chat-protobuf/pom.xml
@@ -35,7 +35,7 @@
         <dependency>
             <groupId>com.google.protobuf</groupId>
             <artifactId>protobuf-java</artifactId>
-            <version>3.11.1</version>
+            <version>3.16.3</version>
         </dependency>
 
         <dependency>