diff --git a/kvs/YCSB/YCSB/elasticsearch/pom.xml b/kvs/YCSB/YCSB/elasticsearch/pom.xml
old mode 100755
new mode 100644
index fc02829..79446fd
--- a/kvs/YCSB/YCSB/elasticsearch/pom.xml
+++ b/kvs/YCSB/YCSB/elasticsearch/pom.xml
@@ -29,7 +29,7 @@ LICENSE file.
     <name>Elasticsearch Binding</name>
     <packaging>jar</packaging>
     <properties>
-        <elasticsearch-version>2.3.2</elasticsearch-version>
+        <elasticsearch-version>6.8.17</elasticsearch-version>
     </properties>
     <dependencies>
         <dependency>