diff --git a/CHANGELOG.md b/CHANGELOG.md
index 190d06e..31f6879 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,4 +4,6 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 Which is based on [Keep A Changelog](http://keepachangelog.com/)
 
 ## [Unreleased]
+
+## [1.0.0] - 2019-02-06
 - first version
diff --git a/README.md b/README.md
index 37e58ea..36b4e6b 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
 # Ansible role: Sensu
-[![Version](https://img.shields.io/badge/latest_version-1.0.0_dev-green.svg)](https://git.yaegashi.fr/nishiki/ansible-role-sensu/releases)
+[![Version](https://img.shields.io/badge/latest_version-1.0.0-green.svg)](https://git.yaegashi.fr/nishiki/ansible-role-sensu/releases)
 [![License](https://img.shields.io/badge/license-Apache--2.0-blue.svg)](https://git.yaegashi.fr/nishiki/ansible-role-sensu/src/branch/master/LICENSE)
 
 Install and configure sensu-go backend and agent