diff --git a/CHANGELOG.md b/CHANGELOG.md
index f03780b..aa3b420 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -30,6 +30,7 @@ The format is based on [Keep a Changelog].
   calling major-mode. Also includes setting for `indent-tabs-mode` ([#286]).
 * [Formatter scripts](scripts/formatters) will now work on Windows if Emacs
   can find the executable defined in the shebang.
+* `.heex` files are now properly formatted
 
 ### Internal
 * Major internal refactoring has occurred to make it possible to write