update changelog

Author: RobinMalfait

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+- Nothing yet!
+
+## [3.0.9] - 2022-01-03
+
 ### Fixed
 
 - Improve `DEBUG` flag ([#6797](https://github.com/tailwindlabs/tailwindcss/pull/6797), [#6804](https://github.com/tailwindlabs/tailwindcss/pull/6804))
@@ -1756,7 +1760,8 @@ No release notes
 
 - Everything!
 
-[unreleased]: https://github.com/tailwindlabs/tailwindcss/compare/v3.0.8...HEAD
+[unreleased]: https://github.com/tailwindlabs/tailwindcss/compare/v3.0.9...HEAD
+[3.0.9]: https://github.com/tailwindlabs/tailwindcss/compare/v3.0.8...v3.0.9
 [3.0.8]: https://github.com/tailwindlabs/tailwindcss/compare/v3.0.7...v3.0.8
 [3.0.7]: https://github.com/tailwindlabs/tailwindcss/compare/v3.0.6...v3.0.7
 [3.0.6]: https://github.com/tailwindlabs/tailwindcss/compare/v3.0.5...v3.0.6