Bun 1 End of Life
Support dates and upgrade guidance — rebuilt from live data.
Supported
Bun 1 is actively supported. The vendor has not published an end-of-support date for this branch.
1.4.2 latest release
Check your versionbun --version
Support timeline
Official dates from the Bun release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 7 Sept 2023 | 3y 1mo ago |
| Latest release | 1.4.2 · 4 Sept 2026 | current |
Frequently asked questions
When does Bun 1 reach end of life?
No end of life date has been announced for Bun 1 yet.
Is Bun 1 still supported?
Yes. Bun 1 is currently maintained. Latest release: 1.4.2, published 4 Sept 2026.
What happens when Bun 1 reaches end of life?
Security fixes stop. After — this branch receives no further updates under standard support.
How long do I have to upgrade from Bun 1?
No end of life date has been announced yet.