ClickHouse 25.5 End of Life
Support dates and upgrade guidance — rebuilt from live data.
End of Life
ClickHouse 25.5 reached end of life on 29 Aug 2025. It no longer receives security fixes.
345 days without security patches
Recommended action: upgrade to ClickHouse 26.7. Check your versionclickhouse-client --version
Support timeline
Official dates from the ClickHouse release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 22 May 2025 | — |
| End of life | 29 Aug 2025 | 0.9 years ago |
| Latest release | 25.5.11.15 · 15 Oct 2025 | final |
Where to go from 25.5
Recommended target: ClickHouse 26.7.
The newest actively supported branch is ClickHouse 26.7 (latest release 26.7.3.19).
Frequently asked questions
Is ClickHouse 25.5 still safe to use?
ClickHouse 25.5 reached end of life on 29 Aug 2025, 345 days ago, and is no longer covered by standard support. Running it means no guaranteed security fixes.
Can I still download ClickHouse 25.5?
Yes — the final release (25.5.11.15) generally remains available from vendor archives and OS package mirrors, but installing it means running software with known, unpatched vulnerabilities.
What should I upgrade ClickHouse 25.5 to?
Upgrade to ClickHouse 26.7, the newest actively supported branch.