diff --git a/pom.xml b/pom.xml
index 5010846a71a1..cc1c8e410e5d 100644
--- a/pom.xml
+++ b/pom.xml
@@ -356,7 +356,7 @@
 			<dependency>
 				<groupId>com.thoughtworks.xstream</groupId>
 				<artifactId>xstream</artifactId>
-				<version>1.4.17</version>
+				<version>1.4.20</version>
 			</dependency>
 			<dependency>
 				<groupId>javax.mail</groupId>