diff --git a/CHANGELOG.md b/CHANGELOG.md
index a6510657e..b96b07173 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,9 @@
 
 ## [Unreleased]
 
+
+## [v318] - 2025-11-12
+
 - Improved the error message shown when a `.python-version` file uses an unsupported file encoding. ([#1958](https://github.com/heroku/heroku-buildpack-python/pull/1958))
 - Improved the error message shown when a `.python-version` or `runtime.txt` file contain an invalid Python version. ([#1958](https://github.com/heroku/heroku-buildpack-python/pull/1958))
 - Added support for commented lines in `runtime.txt`, for parity with `.python-version`. ([#1958](https://github.com/heroku/heroku-buildpack-python/pull/1958))
@@ -1387,7 +1390,8 @@ Default Python is now latest 2.7.10. Updated pip and Distribute.
 - Setuptools updated to v16.0
 - pip updated to v7.0.1
 
-[unreleased]: https://github.com/heroku/heroku-buildpack-python/compare/v317...main
+[unreleased]: https://github.com/heroku/heroku-buildpack-python/compare/v318...main
+[v318]: https://github.com/heroku/heroku-buildpack-python/compare/v317...v318
 [v317]: https://github.com/heroku/heroku-buildpack-python/compare/v316...v317
 [v316]: https://github.com/heroku/heroku-buildpack-python/compare/v315...v316
 [v315]: https://github.com/heroku/heroku-buildpack-python/compare/v314...v315