diff --git a/pom.xml b/pom.xml
index 5c410aef0c..4210444344 100644
--- a/pom.xml
+++ b/pom.xml
@@ -673,7 +673,7 @@
     <dependency>
       <groupId>com.thoughtworks.xstream</groupId>
       <artifactId>xstream</artifactId>
-      <version>1.4.19</version>
+      <version>1.4.21</version>
     </dependency>
     <dependency>
       <groupId>org.springframework.boot</groupId>