Mattermost End of Life (EOL) Dates & Support Timeline
Complete end-of-life dates, support windows, and security status for all Mattermost versions. Data sourced from endoflife.date and official vendor documentation. Updated at every deploy.
Running an EOL version? Get matched with support options — free ↓| Version | Latest Release | Release Date | EOL Date | Days | Status |
|---|---|---|---|---|---|
| 6.0 | 6.0.4 | Oct 8, 2021 | Jan 15, 2022 | 1667 days past EOL | EOL |
| 6.1 | 6.1.3 | Nov 11, 2021 | Feb 15, 2022 | 1636 days past EOL | EOL |
| 6.2 | 6.2.5 | Dec 13, 2021 | Mar 15, 2022 | 1608 days past EOL | EOL |
| 6.3 LTS | 6.3.10 | Jan 13, 2022 | Oct 15, 2022 | 1394 days past EOL | EOL |
| 6.4 | 6.4.3 | Feb 15, 2022 | May 15, 2022 | 1547 days past EOL | EOL |
| 6.5 | 6.5.2 | Mar 11, 2022 | Jun 15, 2022 | 1516 days past EOL | EOL |
| 6.6 | 6.6.2 | Apr 7, 2022 | Jul 15, 2022 | 1486 days past EOL | EOL |
| 6.7 | 6.7.2 | May 11, 2022 | Aug 15, 2022 | 1455 days past EOL | EOL |
| 7.0 | 7.0.2 | Jun 13, 2022 | Sep 15, 2022 | 1424 days past EOL | EOL |
| 7.1 LTS | 7.1.9 | Jul 13, 2022 | May 15, 2023 | 1182 days past EOL | EOL |
| 7.2 | 7.2.1 | Aug 11, 2022 | Nov 15, 2022 | 1363 days past EOL | EOL |
| 7.3 | 7.3.1 | Sep 14, 2022 | Dec 15, 2022 | 1333 days past EOL | EOL |
| 7.4 | 7.4.1 | Oct 12, 2022 | Jan 15, 2023 | 1302 days past EOL | EOL |
| 7.5 LTS | 7.5.2 | Nov 9, 2022 | Feb 15, 2023 | 1271 days past EOL | EOL |
| 7.7 | 7.7.4 | Jan 13, 2023 | Apr 15, 2023 | 1212 days past EOL | EOL |
| 7.8 LTS | 7.8.15 | Feb 14, 2023 | Nov 15, 2023 | 998 days past EOL | EOL |
| 7.9 | 7.9.6 | Mar 14, 2023 | Jul 15, 2023 | 1121 days past EOL | EOL |
| 7.10 | 7.10.5 | Apr 12, 2023 | Aug 15, 2023 | 1090 days past EOL | EOL |
| 8.0 | 8.0.4 | Jul 9, 2023 | Oct 15, 2023 | 1029 days past EOL | EOL |
| 8.1 LTS | 8.1.13 | Aug 10, 2023 | May 15, 2024 | 816 days past EOL | EOL |
| 9.0 | 9.0.5 | Sep 14, 2023 | Dec 15, 2023 | 968 days past EOL | EOL |
| 9.1 | 9.1.5 | Oct 13, 2023 | Jan 15, 2024 | 937 days past EOL | EOL |
| 9.2 | 9.2.6 | Nov 6, 2023 | Feb 15, 2024 | 906 days past EOL | EOL |
| 9.3 | 9.3.3 | Dec 5, 2023 | Mar 15, 2024 | 877 days past EOL | EOL |
| 9.4 | 9.4.5 | Jan 8, 2024 | Apr 15, 2024 | 846 days past EOL | EOL |
| 9.5 | 9.5.14 | Feb 2, 2024 | Nov 15, 2024 | 632 days past EOL | EOL |
| 9.6 | 9.6.3 | Mar 1, 2024 | Jun 15, 2024 | 785 days past EOL | EOL |
| 9.7 | 9.7.6 | Apr 3, 2024 | Jul 15, 2024 | 755 days past EOL | EOL |
| 9.8 | 9.8.3 | May 3, 2024 | Aug 15, 2024 | 724 days past EOL | EOL |
| 9.9 | 9.9.3 | May 31, 2024 | Sep 15, 2024 | 693 days past EOL | EOL |
| 9.10 | 9.10.3 | Jun 28, 2024 | Oct 15, 2024 | 663 days past EOL | EOL |
| 9.11 LTS | 9.11.18 | Aug 2, 2024 | May 15, 2025 | 451 days past EOL | EOL |
| 10.0 | 10.0.4 | Sep 16, 2024 | Dec 15, 2024 | 602 days past EOL | EOL |
| 10.1 | 10.1.7 | Oct 16, 2024 | Jan 15, 2025 | 571 days past EOL | EOL |
| 10.2 | 10.2.3 | Nov 15, 2024 | Feb 15, 2025 | 540 days past EOL | EOL |
| 10.3 | 10.3.4 | Dec 16, 2024 | Mar 15, 2025 | 512 days past EOL | EOL |
| 10.4 | 10.4.5 | Jan 16, 2025 | Apr 15, 2025 | 481 days past EOL | EOL |
| 10.5 LTS | 10.5.14 | Feb 16, 2025 | Nov 15, 2025 | 267 days past EOL | EOL |
| 10.6 | 10.6.6 | Mar 16, 2025 | Jun 15, 2025 | 420 days past EOL | EOL |
| 10.7 | 10.7.4 | Apr 16, 2025 | Jul 15, 2025 | 390 days past EOL | EOL |
| 10.8 | 10.8.4 | May 16, 2025 | Aug 15, 2025 | 359 days past EOL | EOL |
| 10.9 | 10.9.5 | Jun 16, 2025 | Sep 15, 2025 | 328 days past EOL | EOL |
| 10.10 | 10.10.3 | Jul 16, 2025 | Oct 15, 2025 | 298 days past EOL | EOL |
| 10.11 | 10.11.22 | Aug 15, 2025 | Aug 15, 2026 | 6 days remaining | Warning |
| 10.12 | 10.12.4 | Sep 16, 2025 | Dec 15, 2025 | 237 days past EOL | EOL |
| 11.0 | 11.0.7 | Oct 16, 2025 | Jan 15, 2026 | 206 days past EOL | EOL |
| 11.1 | 11.1.3 | Nov 14, 2025 | Feb 15, 2026 | 175 days past EOL | EOL |
| 11.2 | 11.2.4 | Dec 16, 2025 | Mar 15, 2026 | 147 days past EOL | EOL |
| 11.3 | 11.3.3 | Jan 16, 2026 | Apr 15, 2026 | 116 days past EOL | EOL |
| 11.4 | 11.4.5 | Feb 16, 2026 | May 15, 2026 | 86 days past EOL | EOL |
| 11.5 | 11.5.7 | Mar 16, 2026 | Jun 15, 2026 | 55 days past EOL | EOL |
| 11.6 | 11.6.6 | Apr 16, 2026 | Jul 15, 2026 | 25 days past EOL | EOL |
| 11.7 | 11.7.8 | May 15, 2026 | May 15, 2027 | 279 days remaining | Active |
| 11.8 | 11.8.4 | Jun 16, 2026 | Sep 15, 2026 | 37 days remaining | Warning |
| 11.9 | 11.9.0 | Jul 16, 2026 | Oct 15, 2026 | 67 days remaining | Warning |
Live EOL badge for your README — updates automatically at every build.
[](https://endoflife.ai/mattermost)
What does Mattermost end of life mean for your organization?
When a version of Mattermost reaches end of life, the maintainers stop issuing security patches. Vulnerabilities discovered after this date are publicly disclosed on the National Vulnerability Database, exploit code appears on GitHub, and your systems remain permanently exposed.
The CVE blind spot: Most vulnerability scanners check for known CVEs but do not flag the accumulation of unpatched vulnerabilities in EOL software. With a zero-day, nobody knows about the vulnerability. With EOL software, the vulnerability is public — listed, rated, and often weaponized — but no patch will ever exist. This is the most dangerous gap in enterprise security posture.
Organizations running EOL Mattermost should treat it as a vulnerability class in their risk register, apply compensating controls (network segmentation, enhanced monitoring, access restriction), and prioritize migration to a supported version.
Your options when Mattermost reaches end of life
There are four realistic paths. Which one is right depends far more on how long the system needs to keep running than on the version you are on today.
| Option | Best when | Watch out for |
|---|---|---|
| Move to a supported version | The system will outlive the current version's support window and you can schedule the work | Budget for compatibility testing, not just the upgrade itself — that is where the real cost sits |
| Replace the component | The project is unmaintained, or a better-supported alternative exists | The replacement has its own lifecycle and its own end-of-life date — you are changing vendors, not escaping the problem |
| Buy extended support | Migration is genuinely underway but cannot finish before the deadline, or the workload is frozen by certification or a third-party application | A bridge, not a destination — every year purchased is a year the migration still has to happen |
| Document accepted risk | The system is isolated, short-lived, or scheduled for retirement | Only defensible with real compensating controls and a written decision — auditors treat undocumented end-of-life software as a finding |
How to choose, in one question: how many more years does this system need to run? Under a year, extended support (where it exists) is usually cheaper than an emergency migration. One to three years, migrate — support purchased repeatedly costs more than doing the project once, and the project only gets harder as the version ages. Indefinitely, migrate now and plan the next migration before it surprises you.
Worth saying plainly, because vendors selling extended support rarely will: extended support is often the more expensive choice over a multi-year horizon. It is the right answer when a deadline is genuinely unreachable, not as a default. Compare the annual fee against the one-time cost of migrating before committing to either.
Extended Support Options
If you cannot migrate immediately, extended support vendors provide continued security patches for EOL Mattermost versions. This is a bridge, not a permanent solution — plan your migration in parallel.
Mattermost has 51 versions past end of life — security patches have stopped, but CVE disclosures haven't. The good news: extended support for Mattermost exists — vetted vendors ship security patches for years past the official date. Tell us where to reach you and we'll reply with matched options and pricing guidance.