diff --git a/netty-redis-zk-crazymaker-20200521/chatcommon/pom.xml b/netty-redis-zk-crazymaker-20200521/chatcommon/pom.xml
index 0bf2381..5f03520 100644
--- a/netty-redis-zk-crazymaker-20200521/chatcommon/pom.xml
+++ b/netty-redis-zk-crazymaker-20200521/chatcommon/pom.xml
@@ -135,7 +135,7 @@
         <dependency>
             <groupId>com.google.code.gson</groupId>
             <artifactId>gson</artifactId>
-            <version>2.3.1</version>
+            <version>2.8.9</version>
         </dependency>
 
         <dependency>