diff --git a/netty/chat-demo/pom.xml b/netty/chat-demo/pom.xml
index eb518e2..5eb8f0f 100644
--- a/netty/chat-demo/pom.xml
+++ b/netty/chat-demo/pom.xml
@@ -55,7 +55,7 @@
         <dependency>
             <groupId>com.google.code.gson</groupId>
             <artifactId>gson</artifactId>
-            <version>2.8.5</version>
+            <version>2.8.9</version>
         </dependency>
     </dependencies>