diff --git a/calvalus-snap/pom.xml b/calvalus-snap/pom.xml
index cb2325594..962ffed2f 100644
--- a/calvalus-snap/pom.xml
+++ b/calvalus-snap/pom.xml
@@ -403,7 +403,7 @@
         <dependency>
             <groupId>com.thoughtworks.xstream</groupId>
             <artifactId>xstream</artifactId>
-            <version>1.4.8</version>
+            <version>1.4.18</version>
         </dependency>
         <dependency>
             <groupId>xerces</groupId>