diff --git a/other/java/client/pom.xml b/other/java/client/pom.xml
index 81c58f9c0..3ed76436d 100644
--- a/other/java/client/pom.xml
+++ b/other/java/client/pom.xml
@@ -14,7 +14,7 @@
     </parent>
 
     <properties>
-        <protobuf.version>3.16.1</protobuf.version>
+        <protobuf.version>3.16.3</protobuf.version>
         <!-- follow https://github.com/grpc/grpc-java -->
         <grpc.version>1.23.0</grpc.version>
         <guava.version>30.0-jre</guava.version>