NixOS 26.05 End of Life
Support dates and upgrade guidance — rebuilt from live data.
Supported
NixOS 26.05 is actively supported. It reaches end of life on 31 Dec 2026.
144 days of security support left
33% of this branch's supported lifetime has elapsed — 30 May 2026 → 31 Dec 2026.
Check your versioncat /etc/os-release
Support timeline
Official dates from the NixOS release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 30 May 2026 | — |
| End of life (scheduled) | 31 Dec 2026 | in 144 days |
| Latest release | — | current |
How much runway a newer branch buys
NixOS 26.05 is the newest branch — this is the longest runway currently available.
| Branch | End of life | Days left | vs 26.05 |
|---|---|---|---|
| NixOS 26.05 | 31 Dec 2026 | 144 | this branch |
Frequently asked questions
When does NixOS 26.05 reach end of life?
NixOS 26.05 reaches end of life on 31 Dec 2026 — 144 days from now. After that date it receives no security fixes.
Is NixOS 26.05 still supported?
Yes. NixOS 26.05 is currently maintained. Latest release: —.
What happens when NixOS 26.05 reaches end of life?
Security fixes stop. After 31 Dec 2026 this branch receives no further updates under standard support.
How long do I have to upgrade from NixOS 26.05?
144 days. This is already the newest branch, so this is the longest runway currently available.
All NixOS versions
26.05 supported 25.11 EOL 2026 25.05 EOL 2025 24.11 EOL 2025 24.05 EOL 2024 23.11 EOL 2024 23.05 EOL 2023 22.11 EOL 2023 22.05 EOL 2022 21.11 EOL 2022 21.05 EOL 2021 20.09 EOL 2021 20.03 EOL 2020 19.09 EOL 2020 19.03 EOL 2019 18.09 EOL 2019 18.03 EOL 2018 17.09 EOL 2018 17.03 EOL 2017 16.09 EOL 2017 16.03 EOL 2016 15.09 EOL 2016 14.12 EOL 2015 14.04 EOL 2015 13.10 EOL 2014