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 112 days. The current version of Mastodon is 4.7.0. The cycles come from the open endoflife.date project, last reconciled on 26/08/2026.
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 | 4.7.0 | no date on record | supported |
| 4.6 | 4.6.6 | no date on record | supported |
| 4.5 | 4.5.16 | 177 days left | EOL 20 Feb 27 |
| 4.4 | 4.4.23 | 112 days left | EOL 17 Dec |
| 4.3 | 4.3.23 | 113 days ago | End of Life |
| 4.2 | 4.2.29 | 231 days ago | End of Life |
| 4.1 | 4.1.25 | 506 days ago | End of Life |
| 4.0 | 4.0.15 | 1031 days ago | End of Life |
| 3.5 | 3.5.19 | 970 days ago | End of Life |
| 3.4 | 3.4.10 | 1390 days ago | End of Life |
| 3.3 | 3.3.3 | 1554 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 26/08/2026. In case of doubt the vendor's own lifecycle page applies — patchletter deliberately stores no vendor full texts.
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