Fluent Bit 3.1 End of Life
Support dates and upgrade guidance — rebuilt from live data.
End of Life
Fluent Bit 3.1 reached end of life on 12 Feb 2025. It no longer receives security fixes.
543 days without security patches
Recommended action: upgrade to Fluent Bit 5.0. Check your versionfluent-bit -v
Support timeline
Official dates from the Fluent Bit release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 8 Jul 2024 | — |
| End of life | 12 Feb 2025 | 1.5 years ago |
| Latest release | 3.1.10 · 5 Nov 2024 | final |
Where to go from 3.1
Recommended target: Fluent Bit 5.0.
The newest actively supported branch is Fluent Bit 5.0 (latest release 5.0.9).
Frequently asked questions
Is Fluent Bit 3.1 still safe to use?
Fluent Bit 3.1 reached end of life on 12 Feb 2025, 543 days ago, and is no longer covered by standard support. Running it means no guaranteed security fixes.
Can I still download Fluent Bit 3.1?
Yes — the final release (3.1.10) generally remains available from vendor archives and OS package mirrors, but installing it means running software with known, unpatched vulnerabilities.
What should I upgrade Fluent Bit 3.1 to?
Upgrade to Fluent Bit 5.0, the newest actively supported branch.