ClickHouse end of life dates
ClickHouse 26.9 is the newest release line, at 26.9.7.9 (30 Sept 2026). 4 lines are still supported upstream: 26.9, 26.8, 26.7 and 26.3. 17 lines have reached end of life, most recently 26.6 on 21 Sept 2026. 26.3 is next, on 26 Mar 2027.
- Latest release
- 26.9.7.9
- Supported lines
- 4
- End-of-life lines
- 17
- Next end of life
- 26.3 · 26 Mar 2027
ClickHouse release timeline
All ClickHouse versions and end-of-life dates
| Version | Released | Support | Latest | OSSeva |
|---|---|---|---|---|
| 26.9 | 10 days ago(21 Sept 2026) | Yes | 26.9.7.9 | – |
| 26.8 (LTS) | 35 days ago(27 Aug 2026) | Ends in 11 months(27 Aug 2027) | 26.8.15.10 | – |
| 26.7 | 2 months ago(22 Jul 2026) | Yes | 26.7.18.2 | – |
| 26.6 | 3 months ago(25 Jun 2026) | Ended 10 days ago(21 Sept 2026) | 26.6.8.7 | – |
| 26.5 | 4 months ago(21 May 2026) | Ended 35 days ago(27 Aug 2026) | 26.5.7.64 | – |
| 26.4 | 5 months ago(5 May 2026) | Ended 2 months ago(22 Jul 2026) | 26.4.5.143 | – |
| 26.3 (LTS) | 6 months ago(26 Mar 2026) | Ends in 6 months(26 Mar 2027) | 26.3.37.3 | – |
| 26.2 | 7 months ago(27 Feb 2026) | Ended 4 months ago(21 May 2026) | 26.2.19.43 | – |
| 26.1 | 8 months ago(30 Jan 2026) | Ended 5 months ago(5 May 2026) | 26.1.12.23 | – |
| 25.12 | 9 months ago(18 Dec 2025) | Ended 6 months ago(26 Mar 2026) | 25.12.12.1 | – |
| 25.11 | 10 months ago(27 Nov 2025) | Ended 7 months ago(27 Feb 2026) | 25.11.9.34 | – |
| 25.10 | 11 months ago(1 Nov 2025) | Ended 8 months ago(30 Jan 2026) | 25.10.7.6 | – |
| 25.9 | 1 year ago(27 Sept 2025) | Ended 9 months ago(18 Dec 2025) | 25.9.7.56 | – |
| 25.8 (LTS) | 1 year and 1 month ago(29 Aug 2025) | Ended 33 days ago(29 Aug 2026) | 25.8.33.6 | – |
| 25.7 | 1 year and 2 months ago(29 Jul 2025) | Ended 11 months ago(1 Nov 2025) | 25.7.8.71 | – |
| 25.6 | 1 year and 3 months ago(26 Jun 2025) | Ended 1 year ago(27 Sept 2025) | 25.6.13.41 | – |
| 25.5 | 1 year and 4 months ago(22 May 2025) | Ended 1 year and 1 month ago(29 Aug 2025) | 25.5.11.15 | – |
| 25.4 | 1 year and 5 months ago(22 Apr 2025) | Ended 1 year and 2 months ago(29 Jul 2025) | 25.4.13.22 | – |
| 25.3 (LTS) | 1 year and 6 months ago(20 Mar 2025) | Ended 6 months ago(20 Mar 2026) | 25.3.14.14 | – |
| 25.2 | 1 year and 7 months ago(28 Feb 2025) | Ended 1 year and 4 months ago(22 May 2025) | 25.2.2.39 | – |
| 25.1 | 1 year and 8 months ago(28 Jan 2025) | Ended 1 year and 5 months ago(22 Apr 2025) | 25.1.8.25 | – |
Lifecycle data from endoflife.date (MIT licence), refreshed 30 Sept 2026. Upstream policy: clickhouse.com. “Patched” marks end-of-life lines OSSeva ships signed, backported builds for.
Running an end-of-life ClickHouse version?
OSSeva keeps end-of-life ClickHouse patched with signed builds and backported CVE fixes, documents it for your auditor, and can run it for you, so the upgrade happens on your schedule rather than the project’s.
ClickHouse extended supportClickHouse end of life: common questions
What is the latest ClickHouse version?
26.9.7.9, released 30 Sept 2026, on the 26.9 line. Other supported lines: 26.8, 26.7 and 26.3.
When is the next ClickHouse end of life?
ClickHouse 26.3 reaches the end of support on 26 Mar 2027. After that date the project stops shipping security fixes for 26.3, and CVEs disclosed later stay unpatched upstream.
Which ClickHouse versions are still supported?
26.9, 26.8 (until 27 Aug 2027), 26.7 and 26.3 (until 26 Mar 2027). Every other line has reached end of life, per the dates in the table above.
Can I get security patches for an end-of-life ClickHouse version?
Yes. OSSeva provides ClickHouse extended support after upstream support ends, on the Patch, Assure and Operate tiers. See ClickHouse extended support for the versions covered.
Still running an end-of-life ClickHouse?
Tell us the versions and the estate size. We will tell you whether to upgrade or keep it patched, and what each costs.