diff --git a/pom.xml b/pom.xml
index 1a77810..0487533 100644
--- a/pom.xml
+++ b/pom.xml
@@ -20,7 +20,7 @@
     <maven.compiler.target>1.8</maven.compiler.target>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <log4j-version>2.13.0</log4j-version>
-    <vertx-version>3.8.5</vertx-version>
+    <vertx-version>3.9.4</vertx-version>
     <jooq-version>3.12.4</jooq-version>
     <javamail-version>6.0.3</javamail-version>
     <flyway-version>7.1.0</flyway-version>