Mattermost 10.11 End of Life

Support dates and upgrade guidance — rebuilt from live data.

Supported

Mattermost 10.11 is actively supported. It reaches end of life on 15 Aug 2026.

6 days of security support left

10.11.22 latest release

98% of this branch's supported lifetime has elapsed — 15 Aug 2025 → 15 Aug 2026.

Check your versionsudo -u mattermost /opt/mattermost/bin/mattermost version

Support timeline

Official dates from the Mattermost release process.

Moving to Mattermost 11.9 extends security support by about 61 days.

Branch	End of life	Days left	vs 10.11
Mattermost 11.9	15 Oct 2026	67	+61 days
Mattermost 11.8	15 Sept 2026	37	+31 days
Mattermost 11.7	15 May 2027	279	+273 days
Mattermost 10.11	15 Aug 2026	6	this branch

When does Mattermost 10.11 reach end of life?

Mattermost 10.11 reaches end of life on 15 Aug 2026 — 6 days from now. After that date it receives no security fixes.

Is Mattermost 10.11 still supported?

Yes. Mattermost 10.11 is currently maintained. Latest release: 10.11.22, published 17 Jul 2026.

What happens when Mattermost 10.11 reaches end of life?

Security fixes stop. After 15 Aug 2026 this branch receives no further updates under standard support.

How long do I have to upgrade from Mattermost 10.11?

6 days. Moving to Mattermost 11.9 instead buys roughly 61 more days of security support.