diff --git a/pom.xml b/pom.xml
index 80420d3..79dcd7b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -15,7 +15,7 @@
 
     <properties>
         <java.version>1.8</java.version>
-        <vertx.version>3.6.3</vertx.version>
+        <vertx.version>3.9.4</vertx.version>
     </properties>
 
     <dependencies>