diff --git a/ElasticStack/Study_ElasticSearch_Code/pom.xml b/ElasticStack/Study_ElasticSearch_Code/pom.xml
index 55bdab65..7d4f6adb 100644
--- a/ElasticStack/Study_ElasticSearch_Code/pom.xml
+++ b/ElasticStack/Study_ElasticSearch_Code/pom.xml
@@ -24,7 +24,7 @@
         <dependency>
             <groupId>org.elasticsearch.client</groupId>
             <artifactId>elasticsearch-rest-client</artifactId>
-            <version>6.8.5</version>
+            <version>6.8.15</version>
         </dependency>
         <dependency>
             <groupId>org.elasticsearch.client</groupId>