ClickHouse 26.9 End of Life
Support dates and upgrade guidance — rebuilt from live data.
Supported
ClickHouse 26.9 is actively supported. The vendor has not published an end-of-support date for this branch.
26.9.10.4 latest release
Check your versionclickhouse-client --version
Support timeline
Official dates from the ClickHouse release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 21 Sept 2026 | this month |
| Latest release | 26.9.10.4 · 4 Oct 2026 | current |
Frequently asked questions
When does ClickHouse 26.9 reach end of life?
No end of life date has been announced for ClickHouse 26.9 yet.
Is ClickHouse 26.9 still supported?
Yes. ClickHouse 26.9 is currently maintained. Latest release: 26.9.10.4, published 4 Oct 2026.
What happens when ClickHouse 26.9 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 ClickHouse 26.9?
No end of life date has been announced yet.
All ClickHouse versions
26.9 supported 26.8 supported 26.7 supported 26.6 EOL 2026 26.5 EOL 2026 26.4 EOL 2026 26.3 supported 26.2 EOL 2026 26.1 EOL 2026 25.12 EOL 2026 25.11 EOL 2026 25.10 EOL 2026 25.9 EOL 2025 25.8 EOL 2026 25.7 EOL 2025 25.6 EOL 2025 25.5 EOL 2025 25.4 EOL 2025 25.3 EOL 2026 25.2 EOL 2025 25.1 EOL 2025