diff --git a/pom.xml b/pom.xml
old mode 100755
new mode 100644
index da04fbb..b9febde
--- a/pom.xml
+++ b/pom.xml
@@ -228,7 +228,7 @@
         <dependency>
             <groupId>org.elasticsearch</groupId>
             <artifactId>elasticsearch</artifactId>
-            <version>6.5.0</version>
+            <version>6.8.15</version>
         </dependency>
 
         <!-- Java High Level REST Client -->