ClickHouse 25.8 End of Life
Support dates and upgrade guidance — rebuilt from live data.
Supported
ClickHouse 25.8 is actively supported. It reaches end of life on 29 Aug 2026.
20 days of security support left
25.8.29.51 latest release
95% of this branch's supported lifetime has elapsed — 29 Aug 2025 → 29 Aug 2026.
Check your versionclickhouse-client --version
Support timeline
Official dates from the ClickHouse release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 29 Aug 2025 | — |
| End of life (scheduled) | 29 Aug 2026 | in 20 days |
| Latest release | 25.8.29.51 · 5 Aug 2026 | current |
How much runway a newer branch buys
ClickHouse 25.8 is the newest branch — this is the longest runway currently available.
| Branch | End of life | Days left | vs 25.8 |
|---|---|---|---|
| ClickHouse 26.3 | 26 Mar 2027 | 229 | +209 days |
| ClickHouse 25.8 | 29 Aug 2026 | 20 | this branch |
Frequently asked questions
When does ClickHouse 25.8 reach end of life?
ClickHouse 25.8 reaches end of life on 29 Aug 2026 — 20 days from now. After that date it receives no security fixes.
Is ClickHouse 25.8 still supported?
Yes. ClickHouse 25.8 is currently maintained. Latest release: 25.8.29.51, published 5 Aug 2026.
What happens when ClickHouse 25.8 reaches end of life?
Security fixes stop. After 29 Aug 2026 this branch receives no further updates under standard support.
How long do I have to upgrade from ClickHouse 25.8?
20 days. This is already the newest branch, so this is the longest runway currently available.