diff --git a/docs/authentication.asciidoc b/docs/authentication.asciidoc
index 1e1a2a552..71ffe4c46 100644
--- a/docs/authentication.asciidoc
+++ b/docs/authentication.asciidoc
@@ -59,7 +59,7 @@ const client = new Client({
 
 === ApiKey authentication
 
-You can use the https://www.elastic.co/guide/en/elasticsearch/reference/7.x/security-api-create-api-key.html[ApiKey] authentication by passing the `apiKey` parameter via the `auth` option. +
+You can use the https://www.elastic.co/guide/en/elasticsearch/reference/7.16/security-api-create-api-key.html[ApiKey] authentication by passing the `apiKey` parameter via the `auth` option. +
 The `apiKey` parameter can be either a base64 encoded string or an object with the values that you can obtain from the https://www.elastic.co/guide/en/elasticsearch/reference/7.x/security-api-create-api-key.html[create api key endpoint].
 
 NOTE: If you provide both basic authentication credentials and the Api Key configuration, the Api Key will take precedence.
@@ -108,4 +108,4 @@ const client = new Client({
     rejectUnauthorized: true
   }
 })
-----
\ No newline at end of file
+----