diff --git a/netty-redis-zk-crazymaker-20200521/chatcommon/pom.xml b/netty-redis-zk-crazymaker-20200521/chatcommon/pom.xml
index 0bf2381..60a7904 100644
--- a/netty-redis-zk-crazymaker-20200521/chatcommon/pom.xml
+++ b/netty-redis-zk-crazymaker-20200521/chatcommon/pom.xml
@@ -40,7 +40,7 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.11</version>
+            <version>4.13.1</version>
         </dependency>
 
         <dependency>