diff --git a/CHANGELOG.md b/CHANGELOG.md
index 47dd39c7bb..25e24c91a4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # CodeQL Action Changelog
 
-## 2.1.27 - 06 Oct 2022
+## [UNRELEASED]
 
 - Update default CodeQL bundle version to 2.11.1. [#1294](https://github.com/github/codeql-action/pull/1294)
 - Replace uses of GitHub Actions command `set-output` because it is now deprecated. See more information in the [GitHub Changelog](https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/). [#1301](https://github.com/github/codeql-action/pull/1301)