diff --git a/CHANGELOG.md b/CHANGELOG.md
index c43c383..6148275 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,10 +1,14 @@
 # Changelog
 
+## Unreleased
+
+- BREAKING CHANGE: The frontend bundle will be loaded asynchronously (via [#25744](https://github.com/getsentry/sentry/pull/25744)). This is a breaking change that can affect custom plugins that access certain globals in the django template. Please see https://forum.sentry.io/t/breaking-frontend-changes-for-custom-plugins/14184 for more information.
+
 ## 21.6.1
 
 - No documented changes.
 
 ## 21.6.0
 
 - feat: Add healthchecks for redis, memcached and postgres (#975)