diff --git a/webgoat-lessons/pom.xml b/webgoat-lessons/pom.xml
index b0bb6998c..e72e622fc 100644
--- a/webgoat-lessons/pom.xml
+++ b/webgoat-lessons/pom.xml
@@ -93,7 +93,7 @@
         <dependency>
             <groupId>com.thoughtworks.xstream</groupId>
             <artifactId>xstream</artifactId>
-            <version>1.4.5</version>
+            <version>1.4.6</version>
         </dependency>
     </dependencies>
     <dependencyManagement>
diff --git a/webgoat-lessons/vulnerable-components/pom.xml b/webgoat-lessons/vulnerable-components/pom.xml
index 22411f819..9ab4fe3ed 100644
--- a/webgoat-lessons/vulnerable-components/pom.xml
+++ b/webgoat-lessons/vulnerable-components/pom.xml
@@ -12,7 +12,7 @@
         <dependency>
             <groupId>com.thoughtworks.xstream</groupId>
             <artifactId>xstream</artifactId>
-            <version>1.4.7</version>
+            <version>1.4.6</version>
         </dependency>
         <dependency>
             <groupId>cglib</groupId>