diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1a0931c66b..25dc178489 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,8 @@ Important changes to data models, configuration, and migrations between each
 AppEngine version, listed here to ease deployment and troubleshooting.
 
 ## Next Release (replace with git tag when deployed)
+
+## `20250821t093000-all`
  * Bump runtimeVersion to `2025.08.15`.
  * Upgraded runtime Dart SDK to `3.9.0`
  * Upgraded stable Flutter analysis SDK to `3.35.1`.