Composer 2.6 End of Life
Support dates and upgrade guidance — rebuilt from live data.
End of Life
Composer 2.6 reached end of life on 8 Feb 2024. It no longer receives security fixes.
913 days without security patches
Recommended action: upgrade to Composer 2.10. Check your versioncomposer --version
Support timeline
Official dates from the Composer release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 1 Sept 2023 | — |
| End of life | 8 Feb 2024 | 2.5 years ago |
| Latest release | 2.6.6 · 8 Dec 2023 | final |
Where to go from 2.6
Recommended target: Composer 2.10.
The newest actively supported branch is Composer 2.10 (latest release 2.10.2).
Frequently asked questions
Is Composer 2.6 still safe to use?
Composer 2.6 reached end of life on 8 Feb 2024, 913 days ago, and is no longer covered by standard support. Running it means no guaranteed security fixes.
Can I still download Composer 2.6?
Yes — the final release (2.6.6) generally remains available from vendor archives and OS package mirrors, but installing it means running software with known, unpatched vulnerabilities.
What should I upgrade Composer 2.6 to?
Upgrade to Composer 2.10, the newest actively supported branch.