diff --git a/task-assigning-example-processes/pom.xml b/task-assigning-example-processes/pom.xml
index 3799bf2..0c7a975 100644
--- a/task-assigning-example-processes/pom.xml
+++ b/task-assigning-example-processes/pom.xml
@@ -42,7 +42,7 @@
     <dependency>
       <groupId>com.thoughtworks.xstream</groupId>
       <artifactId>xstream</artifactId>
-      <version>1.4.10</version>
+      <version>1.4.19</version>
       <scope>test</scope>
     </dependency>
   </dependencies>