diff --git a/pom.xml b/pom.xml
index e498f32..245f6ff 100644
--- a/pom.xml
+++ b/pom.xml
@@ -49,7 +49,7 @@
         <jaxws-maven.version>1.12</jaxws-maven.version>
 
         <util.version>1.50</util.version>
-        <xstream.version>1.4.6</xstream.version>
+        <xstream.version>1.4.18</xstream.version>
         <jaxws.version>2.1.4</jaxws.version>
         <junit.version>4.8.1</junit.version>
         <commons.version>3.1</commons.version>