diff --git a/protocol/pom.xml b/protocol/pom.xml
index d3e17b01d9c..4398e9e3e56 100644
--- a/protocol/pom.xml
+++ b/protocol/pom.xml
@@ -54,7 +54,7 @@
 		<dependency>
 			<groupId>io.netty</groupId>
 			<artifactId>netty-all</artifactId>
-			<version>4.1.0.Final</version>
+			<version>4.1.42.Final</version>
 		</dependency>
 		<dependency>
 			<groupId>org.projectlombok</groupId>