diff --git a/CHANGELOG.md b/CHANGELOG.md
index 80f3645..7c6a855 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,14 @@ Record of the modification in project development.
 ## [Unreleased] - yyyy-mm-dd
 ### Added
 ### Changed
+### Deprecated
+### Removed
+### Fixed
+### Known Issue
+
+## [1.2.0] - 2021-10-16
+### Added
+### Changed
 - [Issue 25 : Refactoring: Sourcing config.sys is not needed in the chrooted_job](https://github.com/suikan4github/kaiten-yaki/issues/25)
 - [Issue 26 : Update AN01 for btrfs](https://github.com/suikan4github/kaiten-yaki/issues/26)
 - [Issue 27 : Eliminates the confirmation dialog](https://github.com/suikan4github/kaiten-yaki/issues/27)
@@ -66,6 +74,7 @@ See [Testing before release v1.1.0](https://github.com/suikan4github/kaiten-yaki
 ### Known Issue
 
 
-[Unreleased]: https://github.com/suikan4github/kaiten-yaki/compare/v1.1.0...develop
+[Unreleased]: https://github.com/suikan4github/kaiten-yaki/compare/v1.2.0...develop
+[1.2.0]: https://github.com/suikan4github/kaiten-yaki/compare/v1.1.0...v1.2.0
 [1.1.0]: https://github.com/suikan4github/kaiten-yaki/compare/v1.0.0...v1.1.0
 [1.0.0]: https://github.com/suikan4github/kaiten-yaki/compare/v0.0.0...v1.0.0
diff --git a/README.md b/README.md
index 3626ff6..aff6af9 100644
--- a/README.md
+++ b/README.md
@@ -27,9 +27,10 @@ As depicted above, the LVM volume group has only one physical volume.
 These scripts are tested with the following environment. 
 - VMWare Workstation 15.5.7 ( EFI/BIOS )
 - ThinkPad X220 (BIOS)
-- Ubuntu 20.04.2 amd64 desktop
+- Ubuntu 20.04.3 amd64 desktop
 - Ubuntu 21.04 amd64 desktop
-- Ubuntu Mate 20.04.2 amd64 desktop
+- Ubuntu 21.10 amd64 desktop
+- Ubuntu Mate 20.04.3 amd64 desktop
 - void-live-x86_64-20210218-mate.iso
 - void-live-x86_64-musl-20210218-mate.iso
 - void-live-x86_64-20210218.iso