diff --git a/tools/elastic_search.js b/tools/elastic_search.js
index 85351c1..607c151 100644
--- a/tools/elastic_search.js
+++ b/tools/elastic_search.js
@@ -1,6 +1,7 @@
 /* *******************************************************************************************
  * ELASTIC SEARCH
  * https://www.elastic.co/guide/en/elasticsearch/reference/current/index.html
+ * https://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/api-reference.html
  * ******************************************************************************************* */
 
 sudo service elasticsearch status -l  // Check elastic search status