Lua 4.0 End of Life
Support dates and upgrade guidance — rebuilt from live data.
End of Life
Lua 4.0 reached end of life on 4 Jul 2002. It no longer receives security fixes.
8,802 days without security patches
Recommended action: upgrade to Lua 5.5. Check your versionlua -v
Support timeline
Official dates from the Lua release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 6 Nov 2000 | — |
| End of life | 4 Jul 2002 | 24.1 years ago |
| Latest release | 4.0.1 · 4 Jul 2002 | final |
Where to go from 4.0
Recommended target: Lua 5.5.
The newest actively supported branch is Lua 5.5 (latest release 5.5.1).
Frequently asked questions
Is Lua 4.0 still safe to use?
Lua 4.0 reached end of life on 4 Jul 2002, 8,802 days ago, and is no longer covered by standard support. Running it means no guaranteed security fixes.
Can I still download Lua 4.0?
Yes — the final release (4.0.1) generally remains available from vendor archives and OS package mirrors, but installing it means running software with known, unpatched vulnerabilities.
What should I upgrade Lua 4.0 to?
Upgrade to Lua 5.5, the newest actively supported branch.