diff --git a/grpc-client/pom.xml b/grpc-client/pom.xml
index 5dbc153..5f1de56 100644
--- a/grpc-client/pom.xml
+++ b/grpc-client/pom.xml
@@ -12,7 +12,7 @@
         <dependency>
             <groupId>com.google.protobuf</groupId>
             <artifactId>protobuf-java</artifactId>
-            <version>3.11.4</version>
+            <version>3.16.3</version>
         </dependency>
 
         <dependency>