diff --git a/pom.xml b/pom.xml
index 5fbc4912..92b336de 100644
--- a/pom.xml
+++ b/pom.xml
@@ -152,7 +152,7 @@
         <dependency>
             <groupId>org.elasticsearch</groupId>
             <artifactId>elasticsearch</artifactId>
-            <version>5.4.0</version>
+            <version>6.8.15</version>
         </dependency>
         <dependency>
             <groupId>org.elasticsearch.client</groupId>