diff --git a/Gerard/pom.xml b/Gerard/pom.xml
index 0bc66e2..d1e8490 100644
--- a/Gerard/pom.xml
+++ b/Gerard/pom.xml
@@ -18,7 +18,7 @@
         <exec-maven-plugin.version>1.6.0</exec-maven-plugin.version>
 
         <jmh.version>1.21</jmh.version>
-        <vertx.version>3.6.0</vertx.version>
+        <vertx.version>3.9.4</vertx.version>
         <rxjava.version>2.2.0</rxjava.version>
         <junit-jupiter.version>5.3.2</junit-jupiter.version>
         <junit-platform.version>1.3.2</junit-platform.version>