diff --git a/pom.xml b/pom.xml
index 558dfa5..8b49606 100644
--- a/pom.xml
+++ b/pom.xml
@@ -13,7 +13,7 @@
         <dependency>
             <groupId>com.google.protobuf</groupId>
             <artifactId>protobuf-java</artifactId>
-            <version>3.13.0</version>
+            <version>3.16.3</version>
         </dependency>
         <!-- https://mvnrepository.com/artifact/io.grpc/grpc-stub -->
         <dependency>