diff --git a/CHANGELOG.md b/CHANGELOG.md
index 45bb26b514..399b2fe084 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,26 @@
 
 All notable changes to this project will be documented in this file.
 
+## [4.5.3] - 2025-12-08
+
+### Security
+
+- Fix inconsistent error handling leaking information on existence of private posts ([GHSA-gwhw-gcjx-72v8](https://github.com/mastodon/mastodon/security/advisories/GHSA-gwhw-gcjx-72v8))
+
+### Fixed
+
+- Fix “Delete and Redraft” on a non-quote being treated as a quote post in some cases (#37140 by @ClearlyClaire)
+- Fix YouTube embeds by sending referer (#37126 by @ChaosExAnima)
+- Fix streamed quoted polls not being hydrated correctly (#37118 by @ClearlyClaire)
+- Fix creation of duplicate conversations (#37108 by @oneiros)
+- Fix extraneous `noreferrer` in external links (#37107 by @ChaosExAnima)
+- Fix edge case error handling in some database migrations (#37079 by @ClearlyClaire)
+- Fix error handling when re-fetching already-known statuses (#37077 by @ClearlyClaire)
+- Fix post navigation in single-column mode when Advanced UI is enabled (#37044 by @diondiondion)
+- Fix `tootctl status remove` removing quoted posts and remote quotes of local posts (#37009 by @ClearlyClaire)
+- Fix known expensive S3 batch delete operation failing because of short timeouts (#37004 by @ClearlyClaire)
+- Fix compose autosuggest always lowercasing input token (#36995 by @ClearlyClaire)
+
 ## [4.5.2] - 2025-11-20
 
 ### Changed
diff --git a/docker-compose.yml b/docker-compose.yml
index 9140aeb14e..8e48c8b49b 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:v4.5.2
+    image: ghcr.io/mastodon/mastodon:v4.5.3
     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:v4.5.2
+    image: ghcr.io/mastodon/mastodon-streaming:v4.5.3
     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:v4.5.2
+    image: ghcr.io/mastodon/mastodon:v4.5.3
     restart: always
     env_file: .env.production
     command: bundle exec sidekiq