diff --git a/.changeset/remove-nav-item-blueprint-plugin-app.md b/.changeset/remove-nav-item-blueprint-plugin-app.md
index 3dbfdfb355..34929e83bd 100644
--- a/.changeset/remove-nav-item-blueprint-plugin-app.md
+++ b/.changeset/remove-nav-item-blueprint-plugin-app.md
@@ -2,4 +2,4 @@
 '@backstage/plugin-app': patch
 ---
 
-The app nav extension still accepts legacy `nav-item` extensions for backward compatibility with older plugin versions.
+Updated the built-in app nav to discover sidebar entries from page extensions, following the removal of `NavItemBlueprint` in `@backstage/frontend-plugin-api`. Legacy `nav-item` extensions are still accepted so older plugins keep working until they migrate.