diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1d7b13144..345ff4963 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,7 +4,7 @@ See the [releases page](https://github.com/github/codeql-action/releases) for th
 
 ## [UNRELEASED]
 
-No user facing changes.
+- Update default CodeQL bundle version to [2.25.6](https://github.com/github/codeql-action/releases/tag/codeql-bundle-v2.25.6). [#3948](https://github.com/github/codeql-action/pull/3948)
 
 ## 4.36.1 - 02 Jun 2026