diff --git a/NIO_Netty/Project/Demo1/pom.xml b/NIO_Netty/Project/Demo1/pom.xml
index 1466190..7bb875d 100644
--- a/NIO_Netty/Project/Demo1/pom.xml
+++ b/NIO_Netty/Project/Demo1/pom.xml
@@ -17,7 +17,7 @@
         <dependency>
             <groupId>io.netty</groupId>
             <artifactId>netty-all</artifactId>
-            <version>4.1.36.Final</version>
+            <version>4.1.42.Final</version>
         </dependency>
 
         <dependency>