diff --git a/CHANGELOG.md b/CHANGELOG.md
index a7e2bce..f73a23d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,8 @@ Which is based on [Keep A Changelog](http://keepachangelog.com/)
 
 ## [Unreleased]
 
+## v1.0.0 - 2019-09-05
+
 ### Added
 
 - install elasticsearch package
diff --git a/README.md b/README.md
index 980fd03..cf7eb2b 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # Ansible role: Elasticsearch
 
-[![Version](https://img.shields.io/badge/latest_version-1.0.0_dev-green.svg)](https://git.yaegashi.fr/nishiki/ansible-role-elasticsearch/releases)
+[![Version](https://img.shields.io/badge/latest_version-1.0.0-green.svg)](https://git.yaegashi.fr/nishiki/ansible-role-elasticsearch/releases)
 [![License](https://img.shields.io/badge/license-Apache--2.0-blue.svg)](https://git.yaegashi.fr/nishiki/ansible-role-elasticsearch/src/branch/master/LICENSE)
 
 Install and configure Elasticsearch