diff --git a/CHANGELOG.md b/CHANGELOG.md
index 78f2984..c31957f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+## [2.0.0] - 2020-02-08
+
 ### Changed
 
 * rename `private-key` to `key`
@@ -89,7 +91,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 * First release.
 
-[Unreleased]: https://github.com/shimataro/ssh-key-action/compare/v1.6.5...HEAD
+[Unreleased]: https://github.com/shimataro/ssh-key-action/compare/v2.0.0...HEAD
+[2.0.0]: https://github.com/shimataro/ssh-key-action/compare/v1.6.4...v2.0.0
 [1.6.5]: https://github.com/shimataro/ssh-key-action/compare/v1.6.4...v1.6.5
 [1.6.4]: https://github.com/shimataro/ssh-key-action/compare/v1.6.3...v1.6.4
 [1.6.3]: https://github.com/shimataro/ssh-key-action/compare/v1.6.2...v1.6.3
diff --git a/package-lock.json b/package-lock.json
index 7ca97ab..d16851e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "install-ssh-key",
-  "version": "1.6.5",
+  "version": "1.0.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index b0121c0..50a2b19 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "install-ssh-key",
-  "version": "1.6.5",
+  "version": "2.0.0",
   "private": true,
   "description": "Install SSH key in .ssh",
   "main": "lib/main.js",