diff --git a/netty-redis-zk-crazymaker-20200521/NettyDemos/pom.xml b/netty-redis-zk-crazymaker-20200521/NettyDemos/pom.xml
index 99fff29..527e4a8 100644
--- a/netty-redis-zk-crazymaker-20200521/NettyDemos/pom.xml
+++ b/netty-redis-zk-crazymaker-20200521/NettyDemos/pom.xml
@@ -86,7 +86,7 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.11</version>
+            <version>4.13.1</version>
         </dependency>
 
         <dependency>