diff --git a/pom.xml b/pom.xml
index 31beceb..4a6660b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -17,7 +17,7 @@
 		<maven.compiler.target>1.8</maven.compiler.target>
 		<!-- local variables -->
 		<protobuf.groupId>com.google.protobuf</protobuf.groupId>
-		<protobuf.version>3.10.0</protobuf.version>
+		<protobuf.version>3.16.3</protobuf.version>
 		<grpc.groupId>io.grpc</grpc.groupId>
 		<grpc.version>1.24.1</grpc.version>
 	</properties>