diff --git a/netty_im/pom.xml b/netty_im/pom.xml
index 547e83f..5b7e240 100644
--- a/netty_im/pom.xml
+++ b/netty_im/pom.xml
@@ -31,7 +31,7 @@
         <dependency>
             <groupId>io.netty</groupId>
             <artifactId>netty-all</artifactId>
-            <version>4.1.6.Final</version>
+            <version>4.1.42.Final</version>
         </dependency>
         <!-- https://mvnrepository.com/artifact/org.projectlombok/lombok-maven-plugin -->
         <dependency>