Notices by Mastodon Engineering (mastodonengineering@mastodon.social)

Our latest post marks one year of monthly engineering blog updates. We hope you've been finding them useful! Read about what's changed recently, ahead of a planned beta release of Mastodon 4.4 later this month. https://blog.joinmastodon.org/2025/05/trunk-tidbits-april-2025/

We just released Mastodon 4.3.8 and 4.2.21. They contain a few minor bug fixes and a minor security fix.

If you are running nightly versions, an updated container image is available under the `nightly.2025-05-07-security` tag

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

#mastoadmin

Very happy to welcome our second front-end developer to the core team - hey there, @diondiondion 🥳

We've got plenty of improvements in the pipeline, and we're glad to have Dion onboard to make Mastodon better for everyone!

We're laying the groundwork to retire Redis namespaces from a future release of the Mastodon server code. See the update from @dave on GitHub - and let us know in that discussion if you have additional questions. https://github.com/mastodon/mastodon/discussions/34198#discussioncomment-12992222

Note for app developers 💻 the future Mastodon 4.4 release will contain an option for server admins to require a minimum age for user sign-up. If enabled, the sign-up API will behave differently. This is a change that some developers will need to know about, so we wanted to tell you about it in advance. More background in the discussion post on our repository. https://github.com/mastodon/mastodon/discussions/34495

New Trunk & Tidbits post, with many updates that happened over the past month, team news, and a whole lot of community shout-outs!

Final reminder that tomorrow (2025-04-08) is end of life for Mastodon 4.1 - upgrade to a supported version asap.

https://blog.joinmastodon.org/2025/04/trunk-tidbits-march-2025/

@PattyHanson You do not need to do anything, this is for your server administrators to handle, and as you are on mastodon.social, everything is already up-to-date!

We just released Mastodon 4.3.7 and 4.2.20 and 4.1.25. They contain a few minor bug fixes.

Note that this will most likely be the last Mastodon 4.1 release, and 4.1 will be unsupported in 6 days, so we highly advise you to update if you run it.

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

#mastoadmin

We’re looking for a Senior Product Designer to work alongside our frontend and mobile devs.

Ideally:

1. You’re highly skilled in UX design, having led product strategy & design process
2. Proficient in Figma/Penpot, with interaction & usability design skills
3. Experienced in accessibility & privacy-conscious design

This remote fulltime position requires a 4-hour overlap with the CET timezone.

For more info/to apply:
https://jobs.ashbyhq.com/mastodon/d9e4d6d0-d360-4c86-9f04-5c14fbcab8ef

#FediHire #GetFediHired #hiring #product #designer

We are thrilled to welcome Echo (@chaosexanima) to the Mastodon core team as our first front-end developer!

Look out for future enhancements to the web user interface and user experience as we expand the range of expertise on the team. 🥳

We will need to retire the option to use namespaces in Redis (i.e. setting the REDIS_NAMESPACE environment variable) in Mastodon 4.4.

If you run a Mastodon server and currently use Redis namespaces, please have a look at this discussion and leave some feedback:

https://github.com/mastodon/mastodon/discussions/34198

Thanks!

#mastoadmin

If you are running Mastodon 4.1 and use SAML, we encourage you to update to a newer Mastodon version as soon as possible. We also want to remind you that Mastodon 4.1 will no longer receive patches (including for security issues) after 2024-04-08 and we strongly encourage you to update to a newer Mastodon version.

We just released Mastodon 4.3.6, 4.2.19 and 4.1.24. They contain important security fixes.

We recommend server administrators to update as soon as possible if they use SAML, or are on the development version.

If you are using our nightly releases, a container image with the fix has been published with the nightly.2025-03-14-security tag.

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

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

We just released Mastodon 4.3.5 and 4.2.18. They contain a few minor bug fixes.

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

#mastoadmin

We posted our monthly engineering update, Trunk & Tidbits - a bit lighter than usual, but there is still plenty going on. We are about to end support for version 4.1.x, so upgrade now! Also, check out our picks from around the community 👍🏻 https://blog.joinmastodon.org/2025/03/trunk-tidbits-february-2025/

If you are running Mastodon 4.1, note that it only supports Ruby 3.0 (which is no longer supported upstream) and is subject to the above SAML security issue.

Mastodon 4.1 will no longer receive patches (including for security issues) after 2024-04-08 and we strongly encourage you to update to a newer Mastodon version.

#mastoadmin

If you are running Mastodon 4.2: Mastodon 4.2.17 drops support for Ruby 3.0 (which is no longer supported upstream).

If you are using Ruby 3.0, you can update to Mastodon 4.2.16 which contains the latest security fixes, but please note that this version has a known vulnerability if you are using SAML authentication with Mastodon.

If you are running Mastodon 4.2 + Ruby 3.0, we strongly encourage you to update to Ruby 3.2 and Mastodon 4.2.17 or above.

#mastoadmin

We just released Mastodon 4.3.4, 4.2.17 and 4.1.23. They contain bug fixes as well as security fixes (medium severity)

We recommend every instance administrator to update as soon as possible.

If you are using our nightly releases, a container image with the fix has been published with the `nightly.2025-01-27-security` tag.

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

#mastoadmin

Bringing this highly requested feature to #Mastodon and the fediverse is not as trivial as some might think, but quote posts are coming. Here is our latest write-up about our progress:

https://blog.joinmastodon.org/2025/02/bringing-quote-posts-to-mastodon/

Our #TrunkAndTidbits engineering update for January (also including #FOSDEM) is here - here's what we have been working on so far this year. Includes an update on the #Fediscovery project, and some cool projects from the broader developer ecosystem. https://blog.joinmastodon.org/2025/02/trunk-tidbits-january-2025/