diff --git a/pom.xml b/pom.xml
index 01517b9b..4bf4dd61 100644
--- a/pom.xml
+++ b/pom.xml
@@ -944,7 +944,7 @@
 								<dependency>
 									<groupId>com.thoughtworks.xstream</groupId>
 									<artifactId>xstream</artifactId>
-									<version>1.4.20</version>
+									<version>1.4.21</version>
 								</dependency>
 							</dependencies>
 						</plugin>