diff --git a/vertx/pom.xml b/vertx/pom.xml
index b217e0e..c04a8f2 100644
--- a/vertx/pom.xml
+++ b/vertx/pom.xml
@@ -29,7 +29,7 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.9</version>
+            <version>4.13.1</version>
             <scope>test</scope>
         </dependency>
     </dependencies>