diff --git a/pom.xml b/pom.xml
index a4e5952..b377b3d 100644
--- a/pom.xml
+++ b/pom.xml
@@ -403,7 +403,7 @@
     <dependency>
       <groupId>io.vertx</groupId>
       <artifactId>vertx-web</artifactId>
-      <version>3.4.1</version>
+      <version>3.9.4</version>
     </dependency>
 
     <!-- https://mvnrepository.com/artifact/redis.clients/jedis -->