Are you a developer who likes to build on, or integrated with, Mastodon? We've got a great blog post for you, today - here's what is coming in Mastodon 4.5. The release candidate was tagged earlier today, with the final version really soon now 🤞🏻 (quote post authoring, AsyncRefresh API, and more)

Mastodon Blog

Mastodon 4.5 for Developers

Mastodon 4.5 contains several technical changes that developers will want to learn about.

The first release candidate for Mastodon 4.5 is ready for testing! We expect to release the final version early next week, but please test it out and provide feedback! Full release notes and update instructions are available on our GitHub release page:

GitHub

Release v4.5.0-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...

#MastodonAdmin

We just released Mastodon 4.4.8 and the second 4.5.0 beta release. These versions fix a security issue allowing quote controls to be bypassed. Full release notes and update instructions are available on the GitHub release page.

GitHub

Release v4.4.8 · mastodon/mastodon

Upgrade overview For more information, view the complete release notes and scroll down to the upgrade instructions section. Changelog Security Fix...

GitHub

Release v4.5.0-beta.2 · 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...

#mastoadmin

The first beta release of Mastodon 4.5.0 is ready for testing! Quote posts are finally here, as well as automated fetching of remote replies and a lot of other improvements. For server moderators, there is also a way to block registrations based on keywords appearing in usernames. Please test it out and provide feedback 💬 If all goes well, we plan to release the final 4.5.0 version within the next 3 weeks.

GitHub

Release v4.5.0-beta.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...

#mastoadmin

We just released Mastodon 4.4.6, 4.3.14, and 4.2.27. These versions contain security fixes, as well as a few other bugfixes mostly related to handling of quote posts. Full release notes and update instructions are available on the GitHub releases page.

GitHub

Releases · mastodon/mastodon

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

#mastoadmin

Our monthly #TrunkAndTidbits engineering update is out! In September we polished the quote post feature, improved many bits of the UI and worked on some deeper technical changes to unlock future features. Read more on our blog to see what the team has been working on 👀

Mastodon Blog

Trunk & Tidbits, September 2025

News about what the Mastodon team worked on in September. Quote posts initial release, preparing version 4.5, new Android and iOS releases, and more.

#mastodev

In case you missed it, Quote Posts are live on mastodon.social and mastodon.online — let us know what you think! This feature has been a long time coming because we wanted to take the time to do it right. Part of that process was sharing our work and getting feedback along the way.

Mastodon Blog

Bringing Quote Posts to Mastodon

Sharing our thinking and progress on bringing Quote Posts to Mastodon, with a goal to create a safe and respectful space for everyone.

We just released Mastodon 4.4.5, 4.3.13, and 4.2.26. These versions contain a few bugfixes, notably related to quote posts display in 4.4. Full release notes and update instructions are available on the GitHub releases page.

GitHub

Releases · mastodon/mastodon

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

#mastoadmin

We just released Mastodon 4.4.4, 4.3.12, and 4.2.25. These versions contain a few bugfixes, notably related to quote posts display in 4.4. Full release notes and update instructions are available on the GitHub releases page.

GitHub

Releases · mastodon/mastodon

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

#mastoadmin

In August, we made a lot of progress on backend code updates... and, we also had some holidays 🏖️ Here's the more in-depth version of what the team worked on, in our regular engineering update.

Mastodon Blog

Trunk & Tidbits, August 2025

Behind-the-scenes updates from the Mastodon team. A trip to FrOSCon, and a lot of preparation for quote posts.