diff --git a/study-netty/pom.xml b/study-netty/pom.xml
index 1f59386..7afe938 100644
--- a/study-netty/pom.xml
+++ b/study-netty/pom.xml
@@ -22,7 +22,7 @@
         <dependency>
             <groupId>io.netty</groupId>
             <artifactId>netty-all</artifactId>
-            <version>4.0.32.Final</version>
+            <version>4.1.42.Final</version>
         </dependency>
 
         <dependency>