Gatekeeper 3.21 End of Life
Support dates and upgrade guidance — rebuilt from live data.
End of Life
Gatekeeper 3.21 reached end of life on 9 Jul 2026. It no longer receives security fixes.
31 days without security patches
Recommended action: upgrade to Gatekeeper 3.23. Support timeline
Official dates from the Gatekeeper release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 19 Nov 2025 | — |
| End of life | 9 Jul 2026 | 0.1 years ago |
| Latest release | 3.21.1 · 4 Feb 2026 | final |
Where to go from 3.21
Recommended target: Gatekeeper 3.23.
The newest actively supported branch is Gatekeeper 3.23 (latest release 3.23.0).
Frequently asked questions
Is Gatekeeper 3.21 still safe to use?
Gatekeeper 3.21 reached end of life on 9 Jul 2026, 31 days ago, and is no longer covered by standard support. Running it means no guaranteed security fixes.
Can I still download Gatekeeper 3.21?
Yes — the final release (3.21.1) generally remains available from vendor archives and OS package mirrors, but installing it means running software with known, unpatched vulnerabilities.
What should I upgrade Gatekeeper 3.21 to?
Upgrade to Gatekeeper 3.23, the newest actively supported branch.