We've upgraded our Mastodon server to v4.8.0-alpha.1+mementomods-2026-08-23. That is 53 new commits from upstream since our 15.8.2026 build.
This is a quiet round on the surface. Almost all of the upstream work went into the Mastodon 5.0 redesign, which is behind a switch and not turned on for anyone yet, so there are no new features for you this time, just fixes.
🔧 Fixes & improvements
- Autosuggestions no longer overstay their welcome in languages that do not put spaces between words, such as Japanese and Chinese (https://github.com/mastodon/mastodon/pull/40217).
- The advanced interface no longer drops /deck from the address bar when you resize the window (https://github.com/mastodon/mastodon/pull/40180).
- Empty searches now return a clear error instead of running, and searches with no actual term in them are rejected (https://github.com/mastodon/mastodon/pull/40214 and https://github.com/mastodon/mastodon/pull/40196).
- Remote accounts that arrive without a public key no longer cause errors (https://github.com/mastodon/mastodon/pull/40194).
- Admin statistics no longer count one day wrong at the edges of a time range (https://github.com/mastodon/mastodon/pull/40193).
🚀 Under the hood
- The 5.0 redesign continued in cards, menus, callouts, modals, the account navigation menu and most of the composer. All of it stays behind a flag, so nothing changes for you yet.
- The heading font changed from Syne to Cal Sans UI, which for now is only used by those redesigned parts (https://github.com/mastodon/mastodon/pull/40233).
- Mastodon 4.7.0 was released upstream while we sit on the nightly line, so its changelog and security policy came along with this merge. We stay on 4.8.0-alpha.1 (https://github.com/mastodon/mastodon/pull/40231).
- Servers can now switch on gzip compression for responses (https://github.com/mastodon/mastodon/pull/39927).
- A background job that repaired remote collections is no longer scheduled, and an obsolete admin command for duplicate accounts was removed (https://github.com/mastodon/mastodon/pull/39887 and https://github.com/mastodon/mastodon/pull/40232).
📦 Dependency updates
- Routine bumps and translation updates.
The source code of our Mastodon fork: https://github.com/mementomori-social/mastodon
As always, if you notice anything unusual or buggy, please reach out to me or any of the admins. Enjoy your time here, and feel free to message me with any questions or thoughts. 
If anything feels off, please let us know!
PS. Mastodon Bird UI nightly branch supports this branch, but still under Unreleased version, so use the branch please, in case you follow our nightly adventures.
