Envoy 1.21 End of Life
Support dates and upgrade guidance — rebuilt from live data.
Envoy 1.21 reached end of life on 12 Jan 2023. It no longer receives security fixes.
Support timeline
Official dates from the Envoy release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 12 Jan 2022 | — |
| End of life | 12 Jan 2023 | 3.6 years ago |
| Latest release | 1.21.6 · 28 Nov 2022 | final |
Where to go from 1.21
Recommended target: Envoy 1.39 (supported until 14 Jul 2027).
The newest actively supported branch is Envoy 1.39 (latest release 1.39.0).
Frequently asked questions
Is Envoy 1.21 still safe to use?
Envoy 1.21 reached end of life on 12 Jan 2023, 1,305 days ago, and is no longer covered by standard support. Running it means no guaranteed security fixes.
Can I still download Envoy 1.21?
Yes — the final release (1.21.6) generally remains available from vendor archives and OS package mirrors, but installing it means running software with known, unpatched vulnerabilities.
What should I upgrade Envoy 1.21 to?
Upgrade to Envoy 1.39, the newest actively supported branch (supported until 14 Jul 2027).