diff --git a/demo/itstack-naive-chat-server-03/pom.xml b/demo/itstack-naive-chat-server-03/pom.xml
index f813f28..d3fa06c 100644
--- a/demo/itstack-naive-chat-server-03/pom.xml
+++ b/demo/itstack-naive-chat-server-03/pom.xml
@@ -105,7 +105,7 @@
         <dependency>
             <groupId>com.thoughtworks.xstream</groupId>
             <artifactId>xstream</artifactId>
-            <version>1.4.10</version>
+            <version>1.4.19</version>
         </dependency>
         <!-- Netty 4.1.36 -->
         <dependency>