diff --git a/CHANGELOG.md b/CHANGELOG.md
index c29bccb..0de9144 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,196 +1,5 @@
-# Changelog
+# CHANGELOG.md
 
-All notable changes to this project will be documented in this file.
+See `@storybook/addon-designs` [CHANGELOG.md](./packages/storybook-addon-designs/CHANGELOG.md).
 
-The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
-and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
-
-## [Unreleased]
-
-### Changed
-
-- Bump the minimum supported Storybook version to v6.4.x. ([605f751](https://github.com/pocka/storybook-addon-designs/commit/605f75145aca453f8b6d1d3e432b493e3be5bc0c))
-
-### Added
-
-- `sketch` type. ([4e75ddf](https://github.com/pocka/storybook-addon-designs/commit/4e75ddfbc46ec5760db198cbf6d0d8a4074987db))
-- Support for Storybook v7. ([#160](https://github.com/pocka/storybook-addon-designs/pull/160), [#173](https://github.com/pocka/storybook-addon-designs/pull/173), [3789d09](https://github.com/pocka/storybook-addon-designs/commit/3789d09d34166a87b11026120bae4eed2f45166a))
-
-### Fixed
-
-- Declare necessary `peerDependencies`. ([#133](https://github.com/pocka/storybook-addon-designs/pull/133), [dc8dac0](https://github.com/pocka/storybook-addon-designs/commit/dc8dac0a66224a2d6842c2e3bd6127860023f078))
-- Improve content loading performance by retaining loaded content. ([#157](https://github.com/pocka/storybook-addon-designs/pull/157))
-- Fix addon crashes when `type` is not absent. ([9eeb0e2](https://github.com/pocka/storybook-addon-designs/commit/9eeb0e2786f2f3e425df592a28f4fb33af5d00b9))
-- Prevent the entire Storybook UI crash when uncaught error thrown in the addon. ([e51e907](https://github.com/pocka/storybook-addon-designs/commit/e51e90791e4ed71413e023de472a6ead0cae52c2))
-
-## [6.3.1] - 2022-06-14
-
-### Fixed
-
-- Include `blocks.d.ts` in published tarball. ([d966871](https://github.com/pocka/storybook-addon-designs/commit/d966871785d87e7f919b37bb686460bb51e21697))
-
-## [6.3.0] - 2022-06-14
-
-### Added
-
-- Export panel name as `PanelName`. ([851b486](https://github.com/pocka/storybook-addon-designs/commit/851b486543475384173532be27702e6a776b827d))
-
-### Fixed
-
-- Add type definition file for `storybook-addon-designs/blocks`. ([4bf0125](https://github.com/pocka/storybook-addon-designs/commit/4bf012598b476b891779f35d614f9b212af24765))
-
-## [6.2.1] - 2022-01-06
-
-### Fixed
-
-- Fix `Design` tab does not appear when `renderTarget: "tab"`. ([#134](https://github.com/pocka/storybook-addon-designs/issues/134))
-
-## [6.2.0] - 2021-10-03
-
-### Deprecated
-
-- `experimental-figspec` type. Use `figspec` type instead. The parameter interface is same, just replace the `type` property. ([#127](https://github.com/pocka/storybook-addon-designs/pull/127))
-
-### Added
-
-- `figspec` type ([#127](https://github.com/pocka/storybook-addon-designs/pull/127)).
-
-## [6.1.0] - 2021-08-22
-
-### Added
-
-- An ability to customize addon tab name via `name` property ([#112](https://github.com/pocka/storybook-addon-designs/pull/112)).
-- Show the number of design specs in addon tab name ([#112](https://github.com/pocka/storybook-addon-designs/pull/112)).
-
-## [6.0.1] - 2021-07-04
-
-### Fixed
-
-- Fix our Doc Blocks causes a runtime error on some Storybook versions ([#110](https://github.com/pocka/storybook-addon-designs/pull/110)).
-
-## [6.0.0] - 2021-05-17
-
-### Removed
-
-- PDF embedding ([5085b1c](https://github.com/pocka/storybook-addon-designs/commit/5085b1c9a9b0829fa5e2ed1ebba11c46d54dcb1a)).
-- Support for Storybook@v5.x ([6598be6](https://github.com/pocka/storybook-addon-designs/commit/6598be61ae6869ff6b50e502330d4fcd71b44d8f)).
-
-### Added
-
-- Experimental [Figspec](https://github.com/pocka/figspec) embedding (enchanced Figma embeds powered by Figma API), see [here][figspec-usage] for the usage ([7066b62](https://github.com/pocka/storybook-addon-designs/commit/7066b62a2836f4b8b480b81e1c17d60f3f41b752)).
-
-[figspec-usage]: https://pocka.github.io/storybook-addon-designs/?path=/story/docs-figma-figspec-readme--page
-
-### Fixed
-
-- Improve reliablity between story/design changes ([#97](https://github.com/pocka/storybook-addon-designs/pull/97)).
-- Remove `peerDependencies`, which is used as constraints for transitive dependencies ([94bcd84](https://github.com/pocka/storybook-addon-designs/commit/94bcd84aa2013d06c63f5502b085b031a1deb459)).
-
-## [5.4.6] - 2021-07-04
-
-### Fixed
-
-- Fix our Doc Blocks causes a runtime error on some Storybook versions ([61ce68e](https://github.com/pocka/storybook-addon-designs/commit/61ce68e8613878cc28c8b9837d45c206b2ba8119)).
-
-## [5.4.5] - 2021-02-20
-
-### Fixed
-
-- Fix tab contents does not switch between stories ([#83](https://github.com/pocka/storybook-addon-designs/issues/83)).
-
-## [5.4.4] - 2021-02-18
-
-### Fixed
-
-- Hide loading placeholder for `type: "iframe"` when the embedded iframe is loaded ([#81](https://github.com/pocka/storybook-addon-designs/issues/81)).
-
-## [5.4.3] - 2021-01-13
-
-### Fixed
-
-- Fix `allowFullscreen` option is outdated on each render ([#78](https://github.com/pocka/storybook-addon-designs/pull/78)).
-
-## [5.4.2] - 2020-09-16
-
-### Added
-
-- Support for Storybook 6.x ([#67](https://github.com/pocka/storybook-addon-designs/issues/67#issuecomment-692846928)).
-
-## [5.4.1] - 2020-07-31
-
-### Fixed
-
-- Fix `blocks.js` is missing from published package ([#64](https://github.com/pocka/storybook-addon-designs/issues/64)).
-
-## [5.4.0] - 2020-06-27
-
-### Added
-
-- Doc Blocks. (PR: [#62](https://github.com/pocka/storybook-addon-designs/pull/62))
-
-## [5.3.0] - 2020-06-20
-
-### Added
-
-- `offscreen` option. (PR: [#40](https://github.com/pocka/storybook-addon-designs/pull/40))
-- `renderTarget` preset option. (PR: [#47](https://github.com/pocka/storybook-addon-designs/pull/47))
-- An addon preset file so you can write `addons: ["storybook-addon-designs"]` in `main.js`.
-- Export an addon name as `PARAM_KEY` and an interface type of config as `Config` from entry file. (PR: [#57](https://github.com/pocka/storybook-addon-designs/pull/57))
-
-### Fixed
-
-- Fix Figma preview's scale value goes too small when the preview located at second tab or later one. (PR: [#40](https://github.com/pocka/storybook-addon-designs/pull/40))
-- You can now disable this addon by `disabled: true` option. (PR: [#57](https://github.com/pocka/storybook-addon-designs/pull/57))
-
-## [5.2.1] - 2020-05-05
-
-### Fixed
-
-- Fix the addon code is not being transpiled down to ES5. (PR: [#51](https://github.com/pocka/storybook-addon-designs/pull/51))
-- Provide CommonJS modules for non-webpack environments (e.g. Storyshots+Jest). (PR: [#52](https://github.com/pocka/storybook-addon-designs/pull/52))
-
-## [5.2.0] - 2020-02-01
-
-### Added
-
-- `link` type. (PR: [#32](https://github.com/pocka/storybook-addon-designs/pull/32))
-
-## [5.1.2] - 2020-01-22
-
-### Fixed
-
-- Fix crashing when there is no `design` parameter. (PR: [#30](https://github.com/pocka/storybook-addon-designs/pull/30))
-
-## [5.1.1] - 2019-06-06
-
-### Fixed
-
-- Do not persist design panel. (PR: [#15](https://github.com/pocka/storybook-addon-designs/pull/15))
-
-## [5.1.0] - 2019-05-12
-
-### Added
-
-- multiple designs tab support. (PR: [#9](https://github.com/pocka/storybook-addon-designs/pull/9))
-
-[unreleased]: https://github.com/pocka/storybook-addon-designs/compare/v6.3.1...HEAD
-[6.3.1]: https://github.com/pocka/storybook-addon-designs/compare/v6.3.0...v6.3.1
-[6.3.0]: https://github.com/pocka/storybook-addon-designs/compare/v6.2.1...v6.3.0
-[6.2.1]: https://github.com/pocka/storybook-addon-designs/compare/v6.2.0...v6.2.1
-[6.2.0]: https://github.com/pocka/storybook-addon-designs/compare/v6.1.0...v6.2.0
-[6.1.0]: https://github.com/pocka/storybook-addon-designs/compare/v6.0.1...v6.1.0
-[6.0.1]: https://github.com/pocka/storybook-addon-designs/compare/v6.0.0...v6.0.1
-[6.0.0]: https://github.com/pocka/storybook-addon-designs/compare/v5.4.6...v6.0.0
-[5.4.6]: https://github.com/pocka/storybook-addon-designs/compare/v5.4.5...v5.4.6
-[5.4.5]: https://github.com/pocka/storybook-addon-designs/compare/v5.4.4...v5.4.5
-[5.4.4]: https://github.com/pocka/storybook-addon-designs/compare/v5.4.3...v5.4.4
-[5.4.3]: https://github.com/pocka/storybook-addon-designs/compare/v5.4.2...v5.4.3
-[5.4.2]: https://github.com/pocka/storybook-addon-designs/compare/v5.4.1...v5.4.2
-[5.4.1]: https://github.com/pocka/storybook-addon-designs/compare/v5.4.0...v5.4.1
-[5.4.0]: https://github.com/pocka/storybook-addon-designs/compare/v5.3.0...v5.4.0
-[5.3.0]: https://github.com/pocka/storybook-addon-designs/compare/v5.2.1...v5.3.0
-[5.2.1]: https://github.com/pocka/storybook-addon-designs/compare/v5.2.0...v5.2.1
-[5.2.0]: https://github.com/pocka/storybook-addon-designs/compare/v5.1.2...v5.2.0
-[5.1.2]: https://github.com/pocka/storybook-addon-designs/compare/v5.1.1...v5.1.2
-[5.1.1]: https://github.com/pocka/storybook-addon-designs/compare/v5.1.0...v5.1.1
-[5.1.0]: https://github.com/pocka/storybook-addon-designs/compare/v5.0.0...v5.1.0
+For older versions, see [CHANGELOG.v1-6.md](./CHANGELOG.v1-6.md).
diff --git a/CHANGELOG.v1-6.md b/CHANGELOG.v1-6.md
new file mode 100644
index 0000000..c29bccb
--- /dev/null
+++ b/CHANGELOG.v1-6.md
@@ -0,0 +1,196 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+### Changed
+
+- Bump the minimum supported Storybook version to v6.4.x. ([605f751](https://github.com/pocka/storybook-addon-designs/commit/605f75145aca453f8b6d1d3e432b493e3be5bc0c))
+
+### Added
+
+- `sketch` type. ([4e75ddf](https://github.com/pocka/storybook-addon-designs/commit/4e75ddfbc46ec5760db198cbf6d0d8a4074987db))
+- Support for Storybook v7. ([#160](https://github.com/pocka/storybook-addon-designs/pull/160), [#173](https://github.com/pocka/storybook-addon-designs/pull/173), [3789d09](https://github.com/pocka/storybook-addon-designs/commit/3789d09d34166a87b11026120bae4eed2f45166a))
+
+### Fixed
+
+- Declare necessary `peerDependencies`. ([#133](https://github.com/pocka/storybook-addon-designs/pull/133), [dc8dac0](https://github.com/pocka/storybook-addon-designs/commit/dc8dac0a66224a2d6842c2e3bd6127860023f078))
+- Improve content loading performance by retaining loaded content. ([#157](https://github.com/pocka/storybook-addon-designs/pull/157))
+- Fix addon crashes when `type` is not absent. ([9eeb0e2](https://github.com/pocka/storybook-addon-designs/commit/9eeb0e2786f2f3e425df592a28f4fb33af5d00b9))
+- Prevent the entire Storybook UI crash when uncaught error thrown in the addon. ([e51e907](https://github.com/pocka/storybook-addon-designs/commit/e51e90791e4ed71413e023de472a6ead0cae52c2))
+
+## [6.3.1] - 2022-06-14
+
+### Fixed
+
+- Include `blocks.d.ts` in published tarball. ([d966871](https://github.com/pocka/storybook-addon-designs/commit/d966871785d87e7f919b37bb686460bb51e21697))
+
+## [6.3.0] - 2022-06-14
+
+### Added
+
+- Export panel name as `PanelName`. ([851b486](https://github.com/pocka/storybook-addon-designs/commit/851b486543475384173532be27702e6a776b827d))
+
+### Fixed
+
+- Add type definition file for `storybook-addon-designs/blocks`. ([4bf0125](https://github.com/pocka/storybook-addon-designs/commit/4bf012598b476b891779f35d614f9b212af24765))
+
+## [6.2.1] - 2022-01-06
+
+### Fixed
+
+- Fix `Design` tab does not appear when `renderTarget: "tab"`. ([#134](https://github.com/pocka/storybook-addon-designs/issues/134))
+
+## [6.2.0] - 2021-10-03
+
+### Deprecated
+
+- `experimental-figspec` type. Use `figspec` type instead. The parameter interface is same, just replace the `type` property. ([#127](https://github.com/pocka/storybook-addon-designs/pull/127))
+
+### Added
+
+- `figspec` type ([#127](https://github.com/pocka/storybook-addon-designs/pull/127)).
+
+## [6.1.0] - 2021-08-22
+
+### Added
+
+- An ability to customize addon tab name via `name` property ([#112](https://github.com/pocka/storybook-addon-designs/pull/112)).
+- Show the number of design specs in addon tab name ([#112](https://github.com/pocka/storybook-addon-designs/pull/112)).
+
+## [6.0.1] - 2021-07-04
+
+### Fixed
+
+- Fix our Doc Blocks causes a runtime error on some Storybook versions ([#110](https://github.com/pocka/storybook-addon-designs/pull/110)).
+
+## [6.0.0] - 2021-05-17
+
+### Removed
+
+- PDF embedding ([5085b1c](https://github.com/pocka/storybook-addon-designs/commit/5085b1c9a9b0829fa5e2ed1ebba11c46d54dcb1a)).
+- Support for Storybook@v5.x ([6598be6](https://github.com/pocka/storybook-addon-designs/commit/6598be61ae6869ff6b50e502330d4fcd71b44d8f)).
+
+### Added
+
+- Experimental [Figspec](https://github.com/pocka/figspec) embedding (enchanced Figma embeds powered by Figma API), see [here][figspec-usage] for the usage ([7066b62](https://github.com/pocka/storybook-addon-designs/commit/7066b62a2836f4b8b480b81e1c17d60f3f41b752)).
+
+[figspec-usage]: https://pocka.github.io/storybook-addon-designs/?path=/story/docs-figma-figspec-readme--page
+
+### Fixed
+
+- Improve reliablity between story/design changes ([#97](https://github.com/pocka/storybook-addon-designs/pull/97)).
+- Remove `peerDependencies`, which is used as constraints for transitive dependencies ([94bcd84](https://github.com/pocka/storybook-addon-designs/commit/94bcd84aa2013d06c63f5502b085b031a1deb459)).
+
+## [5.4.6] - 2021-07-04
+
+### Fixed
+
+- Fix our Doc Blocks causes a runtime error on some Storybook versions ([61ce68e](https://github.com/pocka/storybook-addon-designs/commit/61ce68e8613878cc28c8b9837d45c206b2ba8119)).
+
+## [5.4.5] - 2021-02-20
+
+### Fixed
+
+- Fix tab contents does not switch between stories ([#83](https://github.com/pocka/storybook-addon-designs/issues/83)).
+
+## [5.4.4] - 2021-02-18
+
+### Fixed
+
+- Hide loading placeholder for `type: "iframe"` when the embedded iframe is loaded ([#81](https://github.com/pocka/storybook-addon-designs/issues/81)).
+
+## [5.4.3] - 2021-01-13
+
+### Fixed
+
+- Fix `allowFullscreen` option is outdated on each render ([#78](https://github.com/pocka/storybook-addon-designs/pull/78)).
+
+## [5.4.2] - 2020-09-16
+
+### Added
+
+- Support for Storybook 6.x ([#67](https://github.com/pocka/storybook-addon-designs/issues/67#issuecomment-692846928)).
+
+## [5.4.1] - 2020-07-31
+
+### Fixed
+
+- Fix `blocks.js` is missing from published package ([#64](https://github.com/pocka/storybook-addon-designs/issues/64)).
+
+## [5.4.0] - 2020-06-27
+
+### Added
+
+- Doc Blocks. (PR: [#62](https://github.com/pocka/storybook-addon-designs/pull/62))
+
+## [5.3.0] - 2020-06-20
+
+### Added
+
+- `offscreen` option. (PR: [#40](https://github.com/pocka/storybook-addon-designs/pull/40))
+- `renderTarget` preset option. (PR: [#47](https://github.com/pocka/storybook-addon-designs/pull/47))
+- An addon preset file so you can write `addons: ["storybook-addon-designs"]` in `main.js`.
+- Export an addon name as `PARAM_KEY` and an interface type of config as `Config` from entry file. (PR: [#57](https://github.com/pocka/storybook-addon-designs/pull/57))
+
+### Fixed
+
+- Fix Figma preview's scale value goes too small when the preview located at second tab or later one. (PR: [#40](https://github.com/pocka/storybook-addon-designs/pull/40))
+- You can now disable this addon by `disabled: true` option. (PR: [#57](https://github.com/pocka/storybook-addon-designs/pull/57))
+
+## [5.2.1] - 2020-05-05
+
+### Fixed
+
+- Fix the addon code is not being transpiled down to ES5. (PR: [#51](https://github.com/pocka/storybook-addon-designs/pull/51))
+- Provide CommonJS modules for non-webpack environments (e.g. Storyshots+Jest). (PR: [#52](https://github.com/pocka/storybook-addon-designs/pull/52))
+
+## [5.2.0] - 2020-02-01
+
+### Added
+
+- `link` type. (PR: [#32](https://github.com/pocka/storybook-addon-designs/pull/32))
+
+## [5.1.2] - 2020-01-22
+
+### Fixed
+
+- Fix crashing when there is no `design` parameter. (PR: [#30](https://github.com/pocka/storybook-addon-designs/pull/30))
+
+## [5.1.1] - 2019-06-06
+
+### Fixed
+
+- Do not persist design panel. (PR: [#15](https://github.com/pocka/storybook-addon-designs/pull/15))
+
+## [5.1.0] - 2019-05-12
+
+### Added
+
+- multiple designs tab support. (PR: [#9](https://github.com/pocka/storybook-addon-designs/pull/9))
+
+[unreleased]: https://github.com/pocka/storybook-addon-designs/compare/v6.3.1...HEAD
+[6.3.1]: https://github.com/pocka/storybook-addon-designs/compare/v6.3.0...v6.3.1
+[6.3.0]: https://github.com/pocka/storybook-addon-designs/compare/v6.2.1...v6.3.0
+[6.2.1]: https://github.com/pocka/storybook-addon-designs/compare/v6.2.0...v6.2.1
+[6.2.0]: https://github.com/pocka/storybook-addon-designs/compare/v6.1.0...v6.2.0
+[6.1.0]: https://github.com/pocka/storybook-addon-designs/compare/v6.0.1...v6.1.0
+[6.0.1]: https://github.com/pocka/storybook-addon-designs/compare/v6.0.0...v6.0.1
+[6.0.0]: https://github.com/pocka/storybook-addon-designs/compare/v5.4.6...v6.0.0
+[5.4.6]: https://github.com/pocka/storybook-addon-designs/compare/v5.4.5...v5.4.6
+[5.4.5]: https://github.com/pocka/storybook-addon-designs/compare/v5.4.4...v5.4.5
+[5.4.4]: https://github.com/pocka/storybook-addon-designs/compare/v5.4.3...v5.4.4
+[5.4.3]: https://github.com/pocka/storybook-addon-designs/compare/v5.4.2...v5.4.3
+[5.4.2]: https://github.com/pocka/storybook-addon-designs/compare/v5.4.1...v5.4.2
+[5.4.1]: https://github.com/pocka/storybook-addon-designs/compare/v5.4.0...v5.4.1
+[5.4.0]: https://github.com/pocka/storybook-addon-designs/compare/v5.3.0...v5.4.0
+[5.3.0]: https://github.com/pocka/storybook-addon-designs/compare/v5.2.1...v5.3.0
+[5.2.1]: https://github.com/pocka/storybook-addon-designs/compare/v5.2.0...v5.2.1
+[5.2.0]: https://github.com/pocka/storybook-addon-designs/compare/v5.1.2...v5.2.0
+[5.1.2]: https://github.com/pocka/storybook-addon-designs/compare/v5.1.1...v5.1.2
+[5.1.1]: https://github.com/pocka/storybook-addon-designs/compare/v5.1.0...v5.1.1
+[5.1.0]: https://github.com/pocka/storybook-addon-designs/compare/v5.0.0...v5.1.0