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..2e53c03
--- a/istio/istio-tutorial-master/recommendation/java/vertx/pom.xml
+++ b/istio/istio-tutorial-master/recommendation/java/vertx/pom.xml
@@ -119,7 +119,7 @@
         <dependency>
             <groupId>org.postgresql</groupId>
             <artifactId>postgresql</artifactId>
-            <version>42.2.5</version>
+            <version>42.3.8</version>
             <scope>compile</scope>
         </dependency>