diff --git a/consumers/pom.xml b/consumers/pom.xml
index d5380a3..62a119f 100644
--- a/consumers/pom.xml
+++ b/consumers/pom.xml
@@ -214,7 +214,7 @@
         <dependency>
             <groupId>com.thoughtworks.xstream</groupId>
             <artifactId>xstream</artifactId>
-            <version>1.4.4</version>
+            <version>1.4.18</version>
         </dependency>
         <dependency>
             <groupId>edu.stanford.nlp</groupId>