diff --git a/CHANGELOG b/CHANGELOG
index 5cd8d4d..20ed82f 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -877,3 +877,11 @@
 * Fix type of `interactingObject`, `interactionTarget` and add missing `QuoteAuthorization` ([#38940](https://github.com/tootsuite/mastodon/issues/38940) by [@ClearlyClaire](https://github.com/ClearlyClaire))
 * Remove unused devise strategies ([#38795](https://github.com/tootsuite/mastodon/issues/38795) by [@ClearlyClaire](https://github.com/ClearlyClaire))
 
+[1.17.12]
+* Update mastodon to 4.5.11
+* [Full Changelog](https://github.com/mastodon/mastodon/releases/tag/v4.5.11)
+* Fix allowed attribution domains spoofing ([GHSA-rwcw-vq68-g34p](https://github.com/mastodon/mastodon/security/advisories/GHSA-rwcw-vq68-g34p))
+* Fix uncaught exception in message sanitization causing Denial of Service ([GHSA-qrgq-9fx2-vf2r](https://github.com/mastodon/mastodon/security/advisories/GHSA-qrgq-9fx2-vf2r))
+* Update dependencies
+* Fix remote statuses with large media descriptions being rejected ([#39135](https://github.com/tootsuite/mastodon/issues/39135) by [@ClearlyClaire](https://github.com/ClearlyClaire))
+
diff --git a/CloudronManifest.json b/CloudronManifest.json
index 62ff8d7..aa9cd69 100644
--- a/CloudronManifest.json
+++ b/CloudronManifest.json
@@ -5,7 +5,7 @@
   "description": "file://DESCRIPTION.md",
   "changelog": "file://CHANGELOG",
   "tagline": "Federated social network",
-  "version": "1.17.11",
+  "version": "1.17.12",
   "upstreamVersion": "4.5.11",
   "healthCheckPath": "/about",
   "httpPort": 8000,