Jenkins 2.555 End of Life
Support dates and upgrade guidance — rebuilt from live data.
End of Life
Jenkins 2.555 reached end of life on 10 Jun 2026. It no longer receives security fixes.
60 days without security patches
Recommended action: upgrade to Jenkins 2. Support timeline
Official dates from the Jenkins release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 18 Mar 2026 | — |
| End of life | 10 Jun 2026 | 0.2 years ago |
| Latest release | 2.555.3 · 8 Jun 2026 | final |
Where to go from 2.555
Recommended target: Jenkins 2.
The newest actively supported branch is Jenkins 2 (latest release 2.576).
Frequently asked questions
Is Jenkins 2.555 still safe to use?
Jenkins 2.555 reached end of life on 10 Jun 2026, 60 days ago, and is no longer covered by standard support. Running it means no guaranteed security fixes.
Can I still download Jenkins 2.555?
Yes — the final release (2.555.3) generally remains available from vendor archives and OS package mirrors, but installing it means running software with known, unpatched vulnerabilities.
What should I upgrade Jenkins 2.555 to?
Upgrade to Jenkins 2, the newest actively supported branch.