diff --git a/grpc-project/pom.xml b/grpc-project/pom.xml
index 312ae5a..ab671f4 100644
--- a/grpc-project/pom.xml
+++ b/grpc-project/pom.xml
@@ -14,7 +14,7 @@
 		<dependency>
 			<groupId>com.google.protobuf</groupId>
 			<artifactId>protobuf-java</artifactId>
-			<version>3.6.1</version>
+			<version>3.16.3</version>
 		</dependency>
 
 		<dependency>