diff --git a/demo/pom.xml b/demo/pom.xml
index 962f0c8e..0115e6f0 100644
--- a/demo/pom.xml
+++ b/demo/pom.xml
@@ -104,7 +104,7 @@
         <dependency>
             <groupId>com.google.protobuf</groupId>
             <artifactId>protobuf-java</artifactId>
-            <version>3.2.0rc2</version>
+            <version>3.16.3</version>
         </dependency>
     </dependencies>