diff --git a/hibernate-playground/pom.xml b/hibernate-playground/pom.xml
old mode 100755
new mode 100644
index 568d255..d261cb6
--- a/hibernate-playground/pom.xml
+++ b/hibernate-playground/pom.xml
@@ -35,7 +35,7 @@
     <dependency>
       <groupId>org.hibernate</groupId>
       <artifactId>hibernate-core</artifactId>
-      <version>4.3.6.Final</version>
+      <version>5.3.20.Final</version>
     </dependency>
     <!-- for JPA, use hibernate-entitymanager instead of hibernate-core -->
     <dependency>