diff --git a/pom.xml b/pom.xml
index eee1c7e3..00e46a14 100644
--- a/pom.xml
+++ b/pom.xml
@@ -148,7 +148,7 @@
         <dependency>
             <groupId>com.thoughtworks.xstream</groupId>
             <artifactId>xstream</artifactId>
-            <version>1.4.20</version>
+            <version>1.4.21</version>
         </dependency>
 
         <dependency>
@@ -345,4 +345,4 @@
             </build>
         </profile>
     </profiles>
-</project>
\ No newline at end of file
+</project>