diff --git a/CHANGELOG.md b/CHANGELOG.md
index f12185b..0629d09 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,8 @@
 All notable changes to this project will be documented in this file.
 
 ## [Unreleased]
+
+## [1.0.0] - 2016-09-01
 ### Added
 - transocks now adopts [github.com/cybozu-go/cmd][cmd] framework.  
   As a result, it implements [the common spec][spec] including graceful restart.
@@ -14,4 +16,5 @@ All notable changes to this project will be documented in this file.
 
 [cmd]: https://github.com/cybozu-go/cmd
 [spec]: https://github.com/cybozu-go/cmd/blob/master/README.md#specifications
-[Unreleased]: https://github.com/cybozu-go/transocks/compare/v0.1...HEAD
+[Unreleased]: https://github.com/cybozu-go/transocks/compare/v1.0.0...HEAD
+[1.0.0]: https://github.com/cybozu-go/transocks/compare/v0.1...v1.0.0