Prometheus 3.15 End of Life

Support dates and upgrade guidance — rebuilt from live data.

Supported

Prometheus 3.15 is actively supported. It reaches end of life on 6 Nov 2026.

32 days of security support left

3.15.0 latest release

26% of this branch's supported lifetime has elapsed — 24 Sept 2026 → 6 Nov 2026.

Check your versionprometheus --version

Support timeline

Official dates from the Prometheus release process.

Prometheus 3.15 is the newest branch — this is the longest runway currently available.

Branch	End of life	Days left	vs 3.15
Prometheus 3.15	6 Nov 2026	32	this branch
Prometheus 3.13	31 Jul 2027	299	+267 days

When does Prometheus 3.15 reach end of life?

Prometheus 3.15 reaches end of life on 6 Nov 2026 — 32 days from now. After that date it receives no security fixes.

Is Prometheus 3.15 still supported?

Yes. Prometheus 3.15 is currently maintained. Latest release: 3.15.0, published 25 Sept 2026.

What happens when Prometheus 3.15 reaches end of life?

Security fixes stop. After 6 Nov 2026 this branch receives no further updates under standard support.

How long do I have to upgrade from Prometheus 3.15?

32 days. This is already the newest branch, so this is the longest runway currently available.