diff --git a/samples/client/petstore/java/vertx/pom.xml b/samples/client/petstore/java/vertx/pom.xml
index 0567f5e6cb5..85eaa7ee3f9 100644
--- a/samples/client/petstore/java/vertx/pom.xml
+++ b/samples/client/petstore/java/vertx/pom.xml
@@ -260,7 +260,7 @@
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <vertx-version>3.4.2</vertx-version>
+        <vertx-version>4.5.23</vertx-version>
         <swagger-core-version>1.5.18</swagger-core-version>
         <threetenbp-version>2.6.4</threetenbp-version>
         <jackson-version>2.10.1</jackson-version>