diff --git a/medplat-web/pom.xml b/medplat-web/pom.xml
index cfa6f65..a06ec49 100644
--- a/medplat-web/pom.xml
+++ b/medplat-web/pom.xml
@@ -266,7 +266,7 @@
         <dependency>
             <groupId>com.thoughtworks.xstream</groupId>
             <artifactId>xstream</artifactId>
-            <version>1.4.20</version>
+            <version>1.4.21</version>
         </dependency>
     </dependencies>