diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
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--- /dev/null
+++ b/CHANGELOG.md
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+# CHANGELOG
+## v1.0.0 (2018-03-21)
+
+* first version
diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
 # Ansible role: Bind
-[![Version](https://img.shields.io/badge/latest_version-0.1.0-green.svg)](https://github.com/nishiki/ansible-role-bind/releases)
+[![Version](https://img.shields.io/badge/latest_version-1.0.0-green.svg)](https://github.com/nishiki/ansible-role-bind/releases)
 [![Build Status](https://travis-ci.org/nishiki/ansible-role-bind.svg?branch=master)](https://travis-ci.org/nishiki/ansible-role-bind)
 [![License](https://img.shields.io/badge/license-Apache--2.0-blue.svg)](https://github.com/nishiki/ansible-role-bind/blob/master/LICENSE)