Mastodon Engineering

@MastodonEngineering
15.9K Followers
17 Following
161 Posts

We're building a free, open-source, decentralised social network that gives people back control over their data and their reach.

This is the account for the software engineering and design team that makes Mastodon.

For news and updates from the overall Mastodon project, follow @Mastodon

For news and updates on the Mastodon servers we operate (like this one!), follow @staff

Homepagehttps://joinmastodon.org
Patreonhttps://patreon.com/mastodon
GitHubhttps://github.com/mastodon
Documentationhttps://docs.joinmastodon.org

We just released Mastodon 4.5.6, 4.4.13, and 4.3.19.

These versions contain various bug fixes, including a fix for a moderate security vulnerability.

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

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

#MastodonAdmin

Releases · mastodon/mastodon

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

GitHub

We just released Mastodon 4.5.5, 4.4.12, and 4.3.18.

These versions contain various bug fixes, including very important (1 high severity, 3 moderate severity) security fixes.

Mastodon 4.2 is now unsupported, so if you still run it, please update to a supported version as soon as you can.

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

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

#mastoadmin

Releases · mastodon/mastodon

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

GitHub

The December edition of Trunk & Tidbits is posted.

It was a quieter month in terms of commits due to the holiday period, but some solid progress was made. Plus, the latest stable releases, end-of-life for Mastodon 4.2, and news about #fosdem

https://blog.joinmastodon.org/2026/01/trunk-tidbits-december-2025/

Trunk & Tidbits, December 2025

A look back at what the team was working on last month, and what's coming next.

Mastodon Blog

We just released Mastodon 4.5.4, 4.4.11, 4.3.17 and 4.2.29.

These versions contain various bug fixes, including a high and a moderate severity security fixes.

Mastodon v4.2.29 will be the last update for the Mastodon v4.2 branch, please update to newer versions as soon as you can.

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

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

Releases · mastodon/mastodon

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

GitHub

As we're working on Collections (an upcoming feature similar to "starter packs"), and improvements to the design of user profiles, we would like to hear from you!

Please use our - short & anonymous! - User Experience Survey to share your thoughts.

#Mastodon #UserExperience #Design

https://tally.so/r/44Qdbk

Mastodon User Experience Survey: User Profile Information

Made with Tally, the simplest way to create forms.

Tally Forms

The November "Trunk & Tidbits" is out! Read about our new organisational announcements and events; the start of development for our Collections feature; CSS theme tokens and Helm chart; and, the latest stable releases.

#mastoadmin #OpenSource

https://blog.joinmastodon.org/2025/12/trunk-tidbits-november-2025/

Trunk & Tidbits, November 2025

Our monthly report on engineering progress. 20k commits! Also, team news, and a round-up of some community projects.

Mastodon Blog

We just released Mastodon 4.5.3, 4.4.10 and 4.3.16 and 4.2.28.

These versions contain various bug fixes, including a fix for a minor security issue.

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

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

#mastoadmin

Releases · mastodon/mastodon

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

GitHub

Attention Mastodon server operators 🤹🏻

We are working on a new Helm chart for Kubernetes deployments, and the team would appreciate your feedback. See this issue for the new repository (and to provide comments) #mastoadmin

https://github.com/mastodon/helm-charts/issues/13

We just released Mastodon 4.5.2, 4.4.9 and 4.3.15.

These versions contain small bug fixes.

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

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

#mastoadmin

Releases · mastodon/mastodon

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

GitHub

We just released Mastodon 4.5.1

This version fixes some bugs found in 4.5.0.

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

https://github.com/mastodon/mastodon/releases/tag/v4.5.1

#mastoadmin

Release v4.5.1 · mastodon/mastodon

This is a patch release for 4.5. Check out the 4.5.0 release notes for information. For a user-focused highlight of these changes, see https://blog.joinmastodon.org/2025/11/mastodon-4.5/ Changelog ...

GitHub