Mastodon Engineering

@MastodonEngineering
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We're building a free, open-source, decentralised social network that gives people back control over their data and their reach.
Homepagehttps://joinmastodon.org
Patreonhttps://patreon.com/mastodon
GitHubhttps://github.com/mastodon
Documentationhttps://docs.joinmastoon.org

In July, the team made great progress on several features planned for the next major release, and tackled some refactoring tasks.

Take a look behind the scenes in our latest #TrunkAndTidbits update 👀

https://blog.joinmastodon.org/2025/08/trunk-tidbits-july-2025/

Trunk & Tidbits, July 2025

Project updates from the Mastodon engineering team. This month: quote posts, Starter Packs, and more.

Mastodon Blog

We just released Mastodon 4.4.3, 4.3.11, and 4.2.24.

These versions contain bugfixes, a fix for a moderate severity rate limit issue, and security issue if you use SAML. In 4.4.3 there are also changes to how quote posts are handled, as we continue to work towards full support for quote posts in the next main release.

Full release notes and update instructions are available on the GitHub releases page. #mastoadmin

https://github.com/mastodon/mastodon/releases

Releases · mastodon/mastodon

Your self-hosted, globally interconnected microblogging community - mastodon/mastodon

GitHub

We just released Mastodon 4.4.2, 4.3.10, and 4.2.23.

These versions all contain some internal Ruby dependency updates for security. Version 4.4.2 also includes some fixes, primarily for user interface issues.

Full release notes and update instructions are available on the GitHub releases page. #mastoadmin

https://github.com/mastodon/mastodon/releases

Releases · mastodon/mastodon

Your self-hosted, globally interconnected microblogging community - mastodon/mastodon

GitHub
Our monthly #TrunkAndTidbits engineering update is out. Looking back at June: behind the scenes on the 4.4 release, as well as all the other things the team has been working on. 🎇 https://blog.joinmastodon.org/2025/07/trunk-tidbits-june-2025/
Trunk & Tidbits, June 2025

News from the Mastodon engineering team. Oh hey, did you hear that Mastodon 4.4 is out?

Mastodon Blog

We just released #Mastodon 4.4.1, a small patch release fixing a few issues with 4.4.0.

We recommend to install this version instead of 4.4.0 when you update your server.

Full release notes and update instructions are available on our GitHub release page: https://github.com/mastodon/mastodon/releases/tag/v4.4.1

#mastoadmin

Release v4.4.1 · mastodon/mastodon

This is a hotfix for 4.4, mostly addressing build and deployment issues with 4.4.0. Check out the 4.4.0 release notes for information. Upgrade overview This release contains upgrade notes that devi...

GitHub

We’re excited to announce that Mastodon 4.4 is now generally available as an upgrade for all Mastodon servers. The update brings improvements to profiles, navigation, list management, media controls, server moderation notes, and more.

https://blog.joinmastodon.org/2025/07/mastodon-4.4

Mastodon 4.4

Improved profile features, enhanced list management, refreshed navigation, and the initial part of our Quote Posts implementation. All of these and more, in our latest release.

Mastodon Blog

We just released Mastodon 4.3.9 and 4.2.22. They contain a number of important bug fixes, and one security-adjacent fix.

If you are running nightly versions, an updated container image is available under the `nightly.2025-07-02` tag

Full release notes and update instructions are available on our GitHub release page:

https://github.com/mastodon/mastodon/releases/

#mastoadmin

Releases · mastodon/mastodon

Your self-hosted, globally interconnected microblogging community - mastodon/mastodon

GitHub

Now would be a great time to update any translations that you're able to help us with. See our project on CrowdIn.

https://crowdin.com/project/mastodon

If all goes well, we hope to release 4.4.0 next week... and then, it's straight on to work on what's next in 4.5!

Mastodon — Translation Project on Crowdin

Help us translate Mastodon and bring it to the world!

Crowdin

We've also shared a blog post about features that developers will want to know about coming in 4.4.

https://blog.joinmastodon.org/2025/07/mastodon-4-4-for-devs/

Mastodon 4.4 for Developers

Here's what developers need to know about the upcoming Mastodon 4.4 release.

Mastodon Blog

We just tagged the release candidate for Mastodon 4.4.0 for testing. Full release notes and update instructions are available on our GitHub release page.

https://github.com/mastodon/mastodon/releases/tag/v4.4.0-rc.1

Release v4.4.0-rc.1 · mastodon/mastodon

WarningThis is a pre-release! This has not been as widely tested as regular releases, although it is still tested on mastodon.social and some other servers. If you update to this release, you will ...

GitHub