Mastodon end of life: end of support by version
Mastodon gGmbH · Collaboration & Communication
For Mastodon by Mastodon gGmbH, patchletter knows 12 support cycles. 8 of them have already ended and receive no more security updates. The next support window closes on 17/12/2026, that is in 68 days. The current version of Mastodon is 4.7.3. The cycles come from the open endoflife.date project, last reconciled on 30/09/2026.
When does support end for which Mastodon version?
A cycle is a maintained version line. Where a date is given, support ends on that day — after it the vendor ships no more security updates for that line.
| Cycle | Latest version | End of support | Status |
|---|---|---|---|
| 4.7 | 4.7.3 | no date on record | supported |
| 4.6 | 4.6.9 | no date on record | supported |
| 4.5 | 4.5.19 | 133 days left | EOL 20 Feb 27 |
| 4.4 | 4.4.26 | 68 days left | EOL in 68 days |
| 4.3 | 4.3.23 | 157 days ago | End of Life |
| 4.2 | 4.2.29 | 275 days ago | End of Life |
| 4.1 | 4.1.25 | 550 days ago | End of Life |
| 4.0 | 4.0.15 | 1075 days ago | End of Life |
| 3.5 | 3.5.19 | 1014 days ago | End of Life |
| 3.4 | 3.4.10 | 1434 days ago | End of Life |
| 3.3 | 3.3.3 | 1598 days ago | End of Life |
| 3.2 | 3.2.2 | no date on record | End of Life |
Which Mastodon versions no longer receive security updates?
8 of 12 cycles have ended. If you run one of those lines, the vendor ships you no more patches — not even for critical flaws.
- Mastodon 4.34.3.23
- Mastodon 4.24.2.29
- Mastodon 4.14.1.25
- Mastodon 4.04.0.15
- Mastodon 3.53.5.19
- Mastodon 3.43.4.10
- Mastodon 3.33.3.3
- Mastodon 3.23.2.2no date on record
Where does the EOL data for Mastodon come from?
From the open endoflife.date project, which collects vendors' official support commitments. patchletter reconciles the cycles daily; the Mastodon data is as of 30/09/2026. In case of doubt the vendor's own lifecycle page applies — patchletter deliberately stores no vendor full texts.
New Mastodon versions by email
Tick the product and patchletter reports new releases by email. The update email costs nothing, and one click stops it again. The warning 90, 30 and 7 days before support ends is part of patchletter Pro.