diff --git a/pom.xml b/pom.xml
index 53d8eed..c01d58f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -124,7 +124,7 @@
         <dependency>
             <groupId>com.thoughtworks.xstream</groupId>
             <artifactId>xstream</artifactId>
-            <version>1.4.9</version>
+            <version>1.4.18</version>
         </dependency>
 
         <dependency>