diff --git a/guides/source/6_1_release_notes.md b/guides/source/6_1_release_notes.md
index 39aabea283..9f638a6799 100644
--- a/guides/source/6_1_release_notes.md
+++ b/guides/source/6_1_release_notes.md
@@ -308,6 +308,7 @@ Please refer to the [Changelog][active-storage] for detailed changes.
 *   Add `Blob.create_and_upload` to create a new blob and upload the given `io`
     to the service.
     ([Pull Request](https://github.com/rails/rails/pull/34827))
+*   ActiveStorage::Blob#service_name column added, activestorage upgrade migration needed, `rails active_storage:update`
 
 Active Model
 ------------