Mastodon 4.5 End of Life
Support dates and upgrade guidance — rebuilt from live data.
Supported
Mastodon 4.5 is actively supported. The vendor has not published an end-of-support date for this branch.
4.5.15 latest release
Check your versiontootctl --version
Support timeline
Official dates from the Mastodon release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 6 Nov 2025 | — |
| End of life (scheduled) | — | not announced |
| Latest release | 4.5.15 · 6 Aug 2026 | current |
Frequently asked questions
When does Mastodon 4.5 reach end of life?
No end-of-life date has been announced for Mastodon 4.5 yet.
Is Mastodon 4.5 still supported?
Yes. Mastodon 4.5 is currently maintained. Latest release: 4.5.15, published 6 Aug 2026.
What happens when Mastodon 4.5 reaches end of life?
Security fixes stop. After — this branch receives no further updates under standard support.
How long do I have to upgrade from Mastodon 4.5?
No end-of-life date has been announced yet.