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MattermostEnd of Life (EOL) Dates & Support Status
Active
CMS & ContentLatest Version: 11.11.1Latest Release: Sep 24, 2026
Mattermost is an open-source, self-hosted messaging platform for team collaboration and communication.
Support summary
Mattermost 11.9 reaches EOL in 18 days. Start upgrade planning and compatibility testing now.
What do EOL and support statuses mean?Next EOL
Oct 15, 2026
Mattermost 11.9 · 18 days left
Supported cycles
4
7 lts
Versions
57
Latest Version
11.11.1
Active Support
4
EOL
53
Lifecycle Timeline
Dec 16, 2025As of Sep 27, 2026
11.11Active · Dec 15, 2026
11.10Active · Nov 15, 2026
11.9Active · Oct 15, 2026
11.8EOL · Sep 15, 2026
11.7Active · May 15, 2027
11.6EOL · Jul 15, 2026
11.5EOL · Jun 15, 2026
11.4EOL · May 15, 2026
11.3EOL · Apr 15, 2026
11.2EOL · Mar 15, 2026
ActiveSecurityEOLHistorical phase unknown
Bars show history up to the snapshot date. Gray intervals lack dated support boundaries; arrows indicate an unannounced EOL date, not a support guarantee.
Versions
| Release | Release Date | Active Support | EOL | Latest Version | LTS | Status |
|---|---|---|---|---|---|---|
| 11.11 | Sep 16, 2026 | Maintained | Dec 15, 2026 | 11.11.1 | No | Active |
| 11.10 | Aug 14, 2026 | Maintained | Nov 15, 2026 | 11.10.2 | No | Active |
| 11.9 | Jul 16, 2026 | Maintained | Oct 15, 2026 | 11.9.2 | No | Active |
| 11.8 | Jun 16, 2026 | Ended | Sep 15, 2026 | 11.8.5 | No | EOL |
| 11.7 | May 15, 2026 | Maintained | May 15, 2027 | 11.7.11 | No | Active |
| 11.6 | Apr 16, 2026 | Ended | Jul 15, 2026 | 11.6.6 | No | EOL |
| 11.5 | Mar 16, 2026 | Ended | Jun 15, 2026 | 11.5.7 | No | EOL |
| 11.4 | Feb 16, 2026 | Ended | May 15, 2026 | 11.4.5 | No | EOL |
| 11.3 | Jan 16, 2026 | Ended | Apr 15, 2026 | 11.3.3 | No | EOL |
| 11.2 | Dec 16, 2025 | Ended | Mar 15, 2026 | 11.2.4 | No | EOL |
| 11.1 | Nov 14, 2025 | Ended | Feb 15, 2026 | 11.1.3 | No | EOL |
| 11.0 | Oct 16, 2025 | Ended | Jan 15, 2026 | 11.0.7 | No | EOL |
| 10.12 | Sep 16, 2025 | Ended | Dec 15, 2025 | 10.12.4 | No | EOL |
| 10.11 | Aug 15, 2025 | Ended | Aug 15, 2026 | 10.11.24 | No | EOL |
| 10.10 | Jul 16, 2025 | Ended | Oct 15, 2025 | 10.10.3 | No | EOL |
| 10.9 | Jun 16, 2025 | Ended | Sep 15, 2025 | 10.9.5 | No | EOL |
| 10.8 | May 16, 2025 | Ended | Aug 15, 2025 | 10.8.4 | No | EOL |
| 10.7 | Apr 16, 2025 | Ended | Jul 15, 2025 | 10.7.4 | No | EOL |
| 10.6 | Mar 16, 2025 | Ended | Jun 15, 2025 | 10.6.6 | No | EOL |
| 10.5 | Feb 16, 2025 | Ended | Nov 15, 2025 | 10.5.14 | Yes | EOL |
| 10.4 | Jan 16, 2025 | Ended | Apr 15, 2025 | 10.4.5 | No | EOL |
| 10.3 | Dec 16, 2024 | Ended | Mar 15, 2025 | 10.3.4 | No | EOL |
| 10.2 | Nov 15, 2024 | Ended | Feb 15, 2025 | 10.2.3 | No | EOL |
| 10.1 | Oct 16, 2024 | Ended | Jan 15, 2025 | 10.1.7 | No | EOL |
| 10.0 | Sep 16, 2024 | Ended | Dec 15, 2024 | 10.0.4 | No | EOL |
| 9.11 | Aug 2, 2024 | Ended | May 15, 2025 | 9.11.18 | Yes | EOL |
| 9.10 | Jun 28, 2024 | Ended | Oct 15, 2024 | 9.10.3 | No | EOL |
| 9.9 | May 31, 2024 | Ended | Sep 15, 2024 | 9.9.3 | No | EOL |
| 9.8 | May 3, 2024 | Ended | Aug 15, 2024 | 9.8.3 | No | EOL |
| 9.7 | Apr 3, 2024 | Ended | Jul 15, 2024 | 9.7.6 | No | EOL |
| 9.6 | Mar 1, 2024 | Ended | Jun 15, 2024 | 9.6.3 | No | EOL |
| 9.5 | Feb 2, 2024 | Ended | Nov 15, 2024 | 9.5.14 | No | EOL |
| 9.4 | Jan 8, 2024 | Ended | Apr 15, 2024 | 9.4.5 | No | EOL |
| 9.3 | Dec 5, 2023 | Ended | Mar 15, 2024 | 9.3.3 | No | EOL |
| 9.2 | Nov 6, 2023 | Ended | Feb 15, 2024 | 9.2.6 | No | EOL |
| 9.1 | Oct 13, 2023 | Ended | Jan 15, 2024 | 9.1.5 | No | EOL |
| 9.0 | Sep 14, 2023 | Ended | Dec 15, 2023 | 9.0.5 | No | EOL |
| 8.1 | Aug 10, 2023 | Ended | May 15, 2024 | 8.1.13 | Yes | EOL |
| 8.0 | Jul 9, 2023 | Ended | Oct 15, 2023 | 8.0.4 | No | EOL |
| 7.10 | Apr 12, 2023 | Ended | Aug 15, 2023 | 7.10.5 | No | EOL |
| 7.9 | Mar 14, 2023 | Ended | Jul 15, 2023 | 7.9.6 | No | EOL |
| 7.8 | Feb 14, 2023 | Ended | Nov 15, 2023 | 7.8.15 | Yes | EOL |
| 7.7 | Jan 13, 2023 | Ended | Apr 15, 2023 | 7.7.4 | No | EOL |
| 7.5 | Nov 9, 2022 | Ended | Feb 15, 2023 | 7.5.2 | Yes | EOL |
| 7.4 | Oct 12, 2022 | Ended | Jan 15, 2023 | 7.4.1 | No | EOL |
| 7.3 | Sep 14, 2022 | Ended | Dec 15, 2022 | 7.3.1 | No | EOL |
| 7.2 | Aug 11, 2022 | Ended | Nov 15, 2022 | 7.2.1 | No | EOL |
| 7.1 | Jul 13, 2022 | Ended | May 15, 2023 | 7.1.9 | Yes | EOL |
| 7.0 | Jun 13, 2022 | Ended | Sep 15, 2022 | 7.0.2 | No | EOL |
| 6.7 | May 11, 2022 | Ended | Aug 15, 2022 | 6.7.2 | No | EOL |
| 6.6 | Apr 7, 2022 | Ended | Jul 15, 2022 | 6.6.2 | No | EOL |
| 6.5 | Mar 11, 2022 | Ended | Jun 15, 2022 | 6.5.2 | No | EOL |
| 6.4 | Feb 15, 2022 | Ended | May 15, 2022 | 6.4.3 | No | EOL |
| 6.3 | Jan 13, 2022 | Ended | Oct 15, 2022 | 6.3.10 | Yes | EOL |
| 6.2 | Dec 13, 2021 | Ended | Mar 15, 2022 | 6.2.5 | No | EOL |
| 6.1 | Nov 11, 2021 | Ended | Feb 15, 2022 | 6.1.3 | No | EOL |
| 6.0 | Oct 8, 2021 | Ended | Jan 15, 2022 | 6.0.4 | No | EOL |
Data sources
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<a href="https://eol.wiki/mattermost/"><img src="https://eol.wiki/badge/mattermost.svg" alt="Mattermost end-of-life status" height="20"></a>Frequently Asked Questions
Which versions of Mattermost have reached end of life?
The following Mattermost versions have reached end of life and no longer receive security updates: 11.8, 11.6, 11.5, 11.4, 11.3, 11.2, 11.1, 11.0 (and 45 more). It is recommended to upgrade to a supported version.
Is it safe to continue using Mattermost 11.8?
Mattermost 11.8 has reached end of life and no longer receives security patches or bug fixes. Continuing to use it may expose your systems to known vulnerabilities. We strongly recommend upgrading to a supported version.
What is the latest version of Mattermost?
The latest version of Mattermost is 11.11.1, released in the 11.11 release cycle.
How many versions of Mattermost are currently supported?
Mattermost currently has 4 actively supported version(s): 11.11, 11.10, 11.9, 11.7.
When does Mattermost 11.11 reach end of life?
Mattermost 11.11 is scheduled to reach end of life on Dec 15, 2026.
What should I do when Mattermost reaches end of life?
When a Mattermost version reaches end of life, you should: 1) Plan your migration to a supported version as soon as possible. 2) Review the release notes for breaking changes. 3) Test your applications thoroughly in a staging environment. 4) Update your dependencies to ensure compatibility with the new version.