I will start installing Mastodon v4.5.2 on Masto.host. There will be about 15 seconds of downtime during the upgrade. Changelog:

GitHub

Release v4.5.2 · mastodon/mastodon

Upgrade overview This release contains upgrade notes that deviate from the norm: ℹ️ Requires assets recompilation For more information, view th...

I will start installing Mastodon v4.5.1 on Masto.host. There will be about 15 seconds of downtime during the upgrade. Changelog:

GitHub

Release v4.5.1 · mastodon/mastodon

This is a patch release for 4.5. Check out the 4.5.0 release notes for information. Changelog Fixes Fix Cmd/Ctrl + Enter not submitting Alt text m...

I will start installing Mastodon v4.5.0 on Masto.host. There will be about 15 seconds of downtime during the upgrade. This update introduces quote posting on Mastodon. More information at

Mastodon Blog

Mastodon 4.5

Quote posts, the end of missing replies, new tools for admins and better emojis. All of these and more, in our latest release.

Changelog:

GitHub

Release v4.5.0 · mastodon/mastodon

For a user-focused highlight of these changes, see https://blog.joinmastodon.org/2025/11/mastodon-4.5/ For changes of particular interest to applic...

One hour ago, the DDoS protection on Masto.host was activated. This occasionally happens for a few minutes and rarely has an impact. But today it looks like there is a significant DDoS attempt, and it's causing response times to be slow or to timeout. Really sorry about that. I will continue to monitor and provide more information.

I will start installing Mastodon v4.4.8 on Masto.host. There will be about 15 seconds of downtime during the upgrade. Changelog:

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...

I will start installing Mastodon v4.4.6 on Masto.host. There will be about 15 seconds of downtime during the upgrade. Changelog:

GitHub

Release v4.4.6 · mastodon/mastodon

Upgrade overview This release contains upgrade notes that deviate from the norm: ℹ️ Requires assets recompilation For more information, view th...

I will start installing Mastodon v4.4.5 on Masto.host. There will be about 15 seconds of downtime during the upgrade. Changelog:

GitHub

Release v4.4.5 · mastodon/mastodon

Upgrade overview This release contains upgrade notes that deviate from the norm: ℹ️ Requires assets recompilation For more information, view th...

I will be starting to install Mastodon v4.4.4 on Masto.host. There will be about 15 seconds of downtime during the upgrade. Changelog:

GitHub

Release v4.4.4 · mastodon/mastodon

Upgrade overview This release contains upgrade notes that deviate from the norm: ℹ️ Requires assets recompilation For more information, view th...

There is currently an issue with the object storage that is causing servers to not be able to process media files and be overloaded (slow or, in extreme cases, stop responding). You can follow the incident here:

[GRA][Public Cloud] - Keystone API incident notification

Public Cloud's Status Page - [GRA][Public Cloud] - Keystone API incident notification.

I will update once I have more information.

Some instances have reported a problem where background jobs stopped processing (Sidekiq stuck). A likely source has been found, and I will be applying a patch

GitHub

Fix synchronous recursive fetching of deeply-nested quoted posts by ClearlyClaire · Pull Request #35600 · mastodon/mastodon

Fixes #35572 Like other resources, quote posts can be recursively fetched, and the depth is limited through the request_id mechanism. However, unli...

About 15 seconds of downtime is expected for all instances hosted on Masto.host. Since the problem occurs randomly, properly testing the patch without deploying it to production is challenging. But in case it doesn't, it will provide more information for a better solution. Sorry for any trouble this may cause.