diff --git a/demo/itstack-naive-chat-server-05/pom.xml b/demo/itstack-naive-chat-server-05/pom.xml
index bc03e99..22c1a49 100644
--- a/demo/itstack-naive-chat-server-05/pom.xml
+++ b/demo/itstack-naive-chat-server-05/pom.xml
@@ -29,7 +29,7 @@
         <dependency>
             <groupId>com.alibaba</groupId>
             <artifactId>fastjson</artifactId>
-            <version>1.2.62</version>
+            <version>1.2.83</version>
         </dependency>
         <!-- Protostuff -->
         <dependency>