diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index 25b9f9e..5ba497e 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -6,6 +6,8 @@ Don't allow empty polls.
 
 Added support for Markdown-style images (converted to attachments) and strikethrough text.
 
+Mastodon API: fixed a cache bug when following local users.
+
 ## 2.56
 
 Don't show instance announcements in public timelines (contributed by sarahpw).