diff --git a/CHANGELOG.md b/CHANGELOG.md
index ea985b236f7..1471d3067ce 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,28 @@
 
 All notable changes to this project will be documented in this file.
 
+## [4.3.9] - 2025-07-02
+
+### Changed
+
+- Change passthrough video processing to emit `moov` atom at start of video (#34726 by @ClearlyClaire)
+
+### Fixed
+
+- Fix `NoMethodError` in edge case of emoji cache handling (#34749 by @dariusk)
+- Fix error when viewing statuses to deleted replies in moderation view (#32986 by @ClearlyClaire)
+- Fix search operators sometimes getting lost (#35190 by @ClearlyClaire)
+- Fix “Alt text” button submitting form in moderation interface (#35147 by @ClearlyClaire)
+- Fix handling of remote attachments with multiple media types (#34996 by @ClearlyClaire)
+- Fix blocked accounts not being automatically removed from trending statuses (#34891 by @ClearlyClaire)
+- Fix inconsistent filtering of silenced accounts for other silenced accounts (#34863 by @ClearlyClaire)
+- Fix handling of inlined `featured` collections in ActivityPub actor objects (#34789 and #34811 by @ClearlyClaire)
+- Fix admin dashboard crash on specific Elasticsearch connection errors (#34683 by @ClearlyClaire)
+- Fix OIDC account creation failing for long display names (#34639 by @defnull)
+- Fix `/share` not using server-set characters limit (#33459 by @kescherCode)
+- Fix wrong video dimensions for some rotated videos (#33008 and #33261 by @Gargron and @tribela)
+- Fix missing autofocus on boost modal (#32953 by @tribela)
+
 ## [4.3.8] - 2025-05-06
 
 ### Security
diff --git a/docker-compose.yml b/docker-compose.yml
index e42afa5464a..2f1270019cf 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -59,7 +59,7 @@ services:
   web:
     # You can uncomment the following line if you want to not use the prebuilt image, for example if you have local code changes
     # build: .
-    image: ghcr.io/mastodon/mastodon:v4.3.8
+    image: ghcr.io/mastodon/mastodon:v4.3.9
     restart: always
     env_file: .env.production
     command: bundle exec puma -C config/puma.rb
@@ -83,7 +83,7 @@ services:
     # build:
     #   dockerfile: ./streaming/Dockerfile
     #   context: .
-    image: ghcr.io/mastodon/mastodon-streaming:v4.3.8
+    image: ghcr.io/mastodon/mastodon-streaming:v4.3.9
     restart: always
     env_file: .env.production
     command: node ./streaming/index.js
@@ -102,7 +102,7 @@ services:
   sidekiq:
     # You can uncomment the following line if you want to not use the prebuilt image, for example if you have local code changes
     # build: .
-    image: ghcr.io/mastodon/mastodon:v4.3.8
+    image: ghcr.io/mastodon/mastodon:v4.3.9
     restart: always
     env_file: .env.production
     command: bundle exec sidekiq
diff --git a/lib/mastodon/version.rb b/lib/mastodon/version.rb
index 3059788d539..9f2ca86bc35 100644
--- a/lib/mastodon/version.rb
+++ b/lib/mastodon/version.rb
@@ -13,7 +13,7 @@ module Mastodon
     end
 
     def patch
-      8
+      9
     end
 
     def default_prerelease