diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7ab4f7211..43f2935d9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 ## [1.0.91] - 2019-??-??
 ### Added
 - Reverse Proxy: Do not retry failed requests to limit pressure on the peer
+- Mastodon API: Add support for `fields_attributes` API parameter (setting custom fields)
 
 ### Fixed
 - Mastodon API: Inability to get some local users by nickname in `/api/v1/accounts/:id_or_nickname`