diff --git a/CHANGELOG.txt b/CHANGELOG.txt
index c59e499595..8a233f660b 100644
--- a/CHANGELOG.txt
+++ b/CHANGELOG.txt
@@ -13,6 +13,7 @@ Changelog
  * Server-side page slug generation now respects `WAGTAIL_ALLOW_UNICODE_SLUGS` (Arkadiusz Michał Ryś)
  * Wagtail admin no longer depends on SiteMiddleware, avoiding incompatibility with Django sites framework and redundant database queries (aritas1, timmysmalls, Matt Westcott)
  * Tag field autocompletion now handles custom tag models (Matt Westcott)
+ * `wagtail_serve` URL route can now be omitted for headless sites (Storm Heg)
  * Fix: Added ARIA alert role to live search forms in the admin (Casper Timmers)
  * Fix: Reorder login form elements to match expected tab order (Kjartan Sverrisson)
  * Fix: Re-add 'Close Explorer' button on mobile viewports (Sævar Öfjörð Magnússon)
diff --git a/docs/releases/2.9.rst b/docs/releases/2.9.rst
index dbc5522eb4..5f55a017fe 100644
--- a/docs/releases/2.9.rst
+++ b/docs/releases/2.9.rst
@@ -22,6 +22,7 @@ Other features
  * Server-side page slug generation now respects ``WAGTAIL_ALLOW_UNICODE_SLUGS`` (Arkadiusz Michał Ryś)
  * Wagtail admin no longer depends on SiteMiddleware, avoiding incompatibility with Django sites framework and redundant database queries (aritas1, timmysmalls, Matt Westcott)
  * Tag field autocompletion now handles custom tag models (Matt Westcott)
+ * ``wagtail_serve`` URL route can now be omitted for headless sites (Storm Heg)
 
 
 Bug fixes