diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7f839874d4..4c0cf90b56 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,12 @@
 
 All changes to Catstodon that aren't Mastodon or glitch-soc Mastodon changes will be documented here.
 
+## [v4.3.0-alpha.3+glitch+cat+1.2.3] - 2024-05-21
+
+- Upstream changes, once again (including, but not limited to:)
+  - Only uses a maximum of 1 megabyte of response body for link previews
+  - Allow multiple `redirect_uri`s for OAuth 2.0 Applications
+
 ## [v4.3.0-alpha.3+glitch+cat+1.2.2] - 2024-05-17
 
 - Upstream changes :3
diff --git a/lib/mastodon/version.rb b/lib/mastodon/version.rb
index f9c1c66f19..343986efa4 100644
--- a/lib/mastodon/version.rb
+++ b/lib/mastodon/version.rb
@@ -25,7 +25,7 @@ module Mastodon
     end
 
     def catstodon_revision
-      '1.2.2'
+      '1.2.3'
     end
 
     def build_metadata