Deno 1 End of Life
Support dates and upgrade guidance — rebuilt from live data.
End of Life
Deno 1 reached end of life on 9 Oct 2024. It no longer receives security fixes.
726 days without security patches
Recommended action: upgrade to Deno 2.9. Check your versiondeno --version
Support timeline
Official dates from the Deno release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 13 Apr 2020 | 6y 6mo ago |
| Security Support ended | 9 Oct 2024 | 2y ago |
| Latest release | 1.46.3 · 4 Sept 2024 | final |
Where to go from 1
Recommended target: Deno 2.9 (supported until 31 Jan 2027).
The newest actively supported branch is Deno 2.9 (latest release 2.9.7).
Frequently asked questions
Is Deno 1 still safe to use?
Deno 1 reached end of life on 9 Oct 2024, 726 days ago, and is no longer covered by standard support. Running it means no guaranteed security fixes.
Can I still download Deno 1?
Yes — the final release (1.46.3) generally remains available from vendor archives and OS package mirrors, but installing it means running software with known, unpatched vulnerabilities.
What should I upgrade Deno 1 to?
Upgrade to Deno 2.9, the newest actively supported branch (supported until 31 Jan 2027).