Fluent Bit 4.1

End of life

4.1.2 Release notes ↗

Is Fluent Bit 4.1 still supported?

No

Fluent Bit 4.1 reached end of life on Feb 11, 2026 (8 months ago). It no longer gets updates, including security fixes. Upgrade to Fluent Bit 5.1 (latest 5.1.3).

Released
Sep 24, 2025
End of life
Feb 11, 2026
8 months ago
Latest version
4.1.2
Dec 10, 2025

Upgrade path

The recommended upgrade is Fluent Bit 5.1, currently at 5.1.3.

Not sure? Run fluent-bit -v

Quick answers

Is Fluent Bit 4.1 still supported?
No. Fluent Bit 4.1 reached end of life on Feb 11, 2026 (8 months ago). It no longer gets updates, including security fixes. Upgrade to Fluent Bit 5.1 (latest 5.1.3).
When is Fluent Bit 4.1 end of life?
Fluent Bit 4.1 reached end of life on Feb 11, 2026. It gets no more updates, including security fixes.
What is the latest version of Fluent Bit 4.1?
The latest Fluent Bit 4.1 release is 4.1.2, released on Dec 10, 2025.
When was Fluent Bit 4.1 released?
Fluent Bit 4.1 was released on Sep 24, 2025.
What should I upgrade Fluent Bit 4.1 to?
The recommended upgrade is Fluent Bit 5.1, currently at 5.1.3.
How do I check which Fluent Bit version I have?
Run fluent-bit -v, then paste the result into the “Am I up to date?” box on this page.

Other Fluent Bit branches

All 26 →
  • 5.1 Supported
  • 5.0 Supported
  • 4.2 End of life
  • 4.1 End of life
  • 4.0 End of life
  • 3.2 End of life
  • 3.1 End of life
  • 3.0 End of life
  • 2.2 End of life
  • 2.1 End of life
  • 2.0 End of life
  • 1.9 End of life
  • 1.8 End of life

← Fluent Bit 4.0 Fluent Bit 4.2 →

Fluent Bit 4.1 release history

RSS

Release dates for 3 Fluent Bit 4.1 versions, newest first.

  1. 4.1.2
  2. 4.1.1
  3. 4.1.0

Keep track

Fluent Bit 4.1 latest version badge

Official release policy · Checked 1 hour ago