diff --git a/netty/pom.xml b/netty/pom.xml
index d576982..ace610c 100644
--- a/netty/pom.xml
+++ b/netty/pom.xml
@@ -37,7 +37,7 @@
 		<dependency>
 			<groupId>com.google.protobuf</groupId>
 			<artifactId>protobuf-java</artifactId>
-			<version>2.6.1</version>
+			<version>3.16.3</version>
 		</dependency>
 
 		<dependency>