diff --git a/.env b/.env
index aa85e2c..81282e9 100644
--- a/.env
+++ b/.env
@@ -1,4 +1,4 @@
-ELASTIC_VERSION=8.3.3
+ELASTIC_VERSION=8.4.0
 
 ## Passwords for stack users
 #
diff --git a/README.md b/README.md
index 1dfceaa..fafa68b 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # Elastic stack (ELK) on Docker
 
-[![Elastic Stack version](https://img.shields.io/badge/Elastic%20Stack-8.3.3-00bfb3?style=flat&logo=elastic-stack)](https://www.elastic.co/blog/category/releases)
+[![Elastic Stack version](https://img.shields.io/badge/Elastic%20Stack-8.4.0-00bfb3?style=flat&logo=elastic-stack)](https://www.elastic.co/blog/category/releases)
 [![Build Status](https://github.com/deviantony/docker-elk/workflows/CI/badge.svg?branch=main)](https://github.com/deviantony/docker-elk/actions?query=workflow%3ACI+branch%3Amain)
 [![Join the chat at https://gitter.im/deviantony/docker-elk](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/deviantony/docker-elk?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 
diff --git a/extensions/enterprise-search/README.md b/extensions/enterprise-search/README.md
index 33dd64e..992d4a1 100644
--- a/extensions/enterprise-search/README.md
+++ b/extensions/enterprise-search/README.md
@@ -60,7 +60,7 @@ xpack.security.authc.api_key.enabled: true
 
 ### Configure the Enterprise Search host in Kibana
 
-Kibana acts as the [management interface][enterprisesearch-ui] to Enterprise Search.
+Kibana acts as the [management interface][enterprisesearch-kb] to Enterprise Search.
 
 To enable the management experience for Enterprise Search, modify the Kibana configuration file in
 [`kibana/config/kibana.yml`][config-kbn] and add the following setting:
@@ -142,7 +142,7 @@ Docker container: [Running Enterprise Search Using Docker][enterprisesearch-dock
 [enterprisesearch-config]: https://www.elastic.co/guide/en/enterprise-search/current/configuration.html
 [enterprisesearch-docker]: https://www.elastic.co/guide/en/enterprise-search/current/docker.html
 [enterprisesearch-docs]: https://www.elastic.co/guide/en/enterprise-search/current/index.html
-[enterprisesearch-ui]: https://www.elastic.co/guide/en/enterprise-search/current/user-interfaces.html
+[enterprisesearch-kb]: https://www.elastic.co/guide/en/kibana/current/enterprise-search-settings-kb.html
 
 [es-security]: https://www.elastic.co/guide/en/elasticsearch/reference/current/security-settings.html#api-key-service-settings
 [config-es]: ../../elasticsearch/config/elasticsearch.yml