diff --git a/tomcat/pom.xml b/tomcat/pom.xml
index 45b8150..9583fd7 100644
--- a/tomcat/pom.xml
+++ b/tomcat/pom.xml
@@ -136,7 +136,7 @@
 		<dependency>
 			<groupId>com.thoughtworks.xstream</groupId>
 			<artifactId>xstream</artifactId>
-			<version>1.3.1</version>
+			<version>1.4.15</version>
 		</dependency>
 		<dependency>
 			<groupId>org.codehaus.jackson</groupId>