diff --git a/istio/istio-tutorial-master/recommendation/java/vertx/pom.xml b/istio/istio-tutorial-master/recommendation/java/vertx/pom.xml
old mode 100755
new mode 100644
index dd3f3cd..fed32ff
--- a/istio/istio-tutorial-master/recommendation/java/vertx/pom.xml
+++ b/istio/istio-tutorial-master/recommendation/java/vertx/pom.xml
@@ -12,7 +12,7 @@
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
         <java.version>1.8</java.version>
-        <vertx.version>3.6.2</vertx.version>
+        <vertx.version>3.9.4</vertx.version>
         <vertx.maven.plugin.version>1.0.13</vertx.maven.plugin.version>
         <cube.version>1.18.2</cube.version>
     </properties>