MAINTENANCE.md
This document outlines the maintenance strategy and version support for Fluent Bit.
| Branch | Version | Status | Maintainer | Notes |
|---|---|---|---|---|
master | v5.1.x | Stable | Eduardo Silva | Current stable release series. All new features and bug fixes land here first. |
5.0 | v5.0.x | Maintenance only | Eduardo Silva Hiroshi Hatake (@cosmo0920) | Critical bug fixes, security fixes, and selected low-risk backports until November 30, 2026. |
Fluent Bit v5.1 is the current stable release series and is tracked in the
master branch. The v5.0 branch is in maintenance mode and receives bug
fixes, security updates, and selected low-risk backports until its
End-of-Maintenance date. Older release lines are End-of-Life (EOL).
⚠️ All changes must first be merged into
masterbefore being cherry-picked into maintenance branches by the maintainer.
Maintenance releases continue on an as-needed basis depending on urgency and impact.
v5.1 is the current stable release series and is recommended for production
use. New features and bug fixes land in master first.
v5.0 is in maintenance mode and receives critical bug fixes, security updates, and selected low-risk backports until November 30, 2026 (as specified in SECURITY.md).
v4.2 reached End-of-Life (EOL) on July 30, 2026 and is no longer maintained.
v4.1 reached End-of-Life (EOL) on February 28, 2026 and is no longer maintained.
v4.0 reached End-of-Life (EOL) on December 23, 2025 and is no longer maintained. No further security patches or bug fixes will be provided for this version line.
If you're submitting a fix or feature relevant to a stable or maintenance branch:
master branchTarget: v5.0 to the PR or issue and tag
@edsiper or
@cosmo0920Note: v4.2 and earlier are End-of-Life and no longer accept backports. For security-related issues, follow the process outlined in SECURITY.md.