ESLint 9 End of Life
Support dates and upgrade guidance — rebuilt from live data.
End of Life
ESLint 9 reached end of life on 6 Aug 2026. It no longer receives security fixes.
60 days without security patches
Recommended action: upgrade to ESLint 10. Support timeline
Official dates from the ESLint release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 5 Apr 2024 | 2y 6mo ago |
| Active Support ended | 14 Nov 2025 | security fixes only after this |
| Maintenance Support ended | 6 Aug 2026 | 2mo ago |
| Latest release | 9.39.5 · 10 Jul 2026 | final |
Where to go from 9
Recommended target: ESLint 10.
The newest actively supported branch is ESLint 10 (latest release 10.12.0).
Frequently asked questions
Is ESLint 9 still safe to use?
ESLint 9 reached end of life on 6 Aug 2026, 60 days ago, and is no longer covered by standard support. Running it means no guaranteed security fixes.
Can I still download ESLint 9?
Yes — the final release (9.39.5) generally remains available from vendor archives and OS package mirrors, but installing it means running software with known, unpatched vulnerabilities.
What should I upgrade ESLint 9 to?
Upgrade to ESLint 10, the newest actively supported branch.