diff --git a/query.expander.ws.server/pom.xml b/query.expander.ws.server/pom.xml
index d1b6cf2..492163a 100644
--- a/query.expander.ws.server/pom.xml
+++ b/query.expander.ws.server/pom.xml
@@ -90,7 +90,7 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.4</version>
+            <version>4.13.1</version>
             <scope>test</scope>
         </dependency>
       </dependencies>