diff --git a/java_gen/pre-written/pom.xml b/java_gen/pre-written/pom.xml
index 77ecfb0f..bd51148b 100644
--- a/java_gen/pre-written/pom.xml
+++ b/java_gen/pre-written/pom.xml
@@ -87,7 +87,7 @@
         <dependency>
             <groupId>io.netty</groupId>
             <artifactId>netty-all</artifactId>
-            <version>4.1.50.Final</version>
+            <version>4.1.76.Final</version>
         </dependency>
         <dependency>
             <groupId>com.google.guava</groupId>