diff --git a/MedianMIMD/pom.xml b/MedianMIMD/pom.xml
index 49aa81f..4d7b056 100644
--- a/MedianMIMD/pom.xml
+++ b/MedianMIMD/pom.xml
@@ -20,7 +20,7 @@
         <dependency>
             <groupId>com.thoughtworks.xstream</groupId>
             <artifactId>xstream</artifactId>
-            <version>1.4.11.1</version>
+            <version>1.4.20</version>
         </dependency>
         <dependency>
             <groupId>org.apache.httpcomponents</groupId>