diff --git a/pom.xml b/pom.xml
index d170b7c2376e..92320559be1e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -2526,7 +2526,7 @@
               <dependency>
                 <groupId>com.thoughtworks.xstream</groupId>
                 <artifactId>xstream</artifactId>
-                <version>1.4.20</version>
+                <version>1.4.21</version>
               </dependency>
             </dependencies>
             <executions>