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Fluent BitEnd of Life (EOL) Dates & Support Status
Active
Tools & MonitoringLatest Version: 5.1.2Latest Release: Sep 5, 2026
Fluent Bit is a lightweight log processor and forwarder for collecting and shipping telemetry data.
Support summary
Fluent Bit 5.0 reaches EOL in 40 days. Start upgrade planning and compatibility testing now.
What do EOL and support statuses mean?Next EOL
Nov 6, 2026
Fluent Bit 5.0 · 40 days left
Supported cycles
2
0 lts
Versions
26
Latest Version
5.1.2
Active Support
2
EOL
24
Lifecycle Timeline
Apr 18, 2023As of Sep 27, 2026
5.1Active · Date not announced
5.0Active · Nov 6, 2026
4.2EOL · Jun 30, 2026
4.1EOL · Feb 11, 2026
4.0EOL · Dec 24, 2025
3.2EOL · Jun 29, 2025
3.1EOL · Feb 12, 2025
3.0EOL · Oct 8, 2024
2.2EOL · Jun 21, 2024
2.1EOL · Feb 6, 2024
ActiveSecurityEOLHistorical phase unknown
Bars show history up to the snapshot date. Gray intervals lack dated support boundaries; arrows indicate an unannounced EOL date, not a support guarantee.
Versions
| Release | Release Date | Active Support | EOL | Latest Version | LTS | Status |
|---|---|---|---|---|---|---|
| 5.1 | Aug 6, 2026 | Maintained | Date not announced | 5.1.2 | No | Active |
| 5.0 | Mar 31, 2026 | Maintained | Nov 6, 2026 | 5.0.10 | No | Active |
| 4.2 | Nov 11, 2025 | Ended | Jun 30, 2026 | 4.2.8 | No | EOL |
| 4.1 | Sep 24, 2025 | Ended | Feb 11, 2026 | 4.1.2 | No | EOL |
| 4.0 | Mar 29, 2025 | Ended | Dec 24, 2025 | 4.0.14 | No | EOL |
| 3.2 | Nov 12, 2024 | Ended | Jun 29, 2025 | 3.2.10 | No | EOL |
| 3.1 | Jul 8, 2024 | Ended | Feb 12, 2025 | 3.1.10 | No | EOL |
| 3.0 | Mar 21, 2024 | Ended | Oct 8, 2024 | 3.0.7 | No | EOL |
| 2.2 | Nov 6, 2023 | Ended | Jun 21, 2024 | 2.2.3 | No | EOL |
| 2.1 | Apr 18, 2023 | Ended | Feb 6, 2024 | 2.1.10 | No | EOL |
| 2.0 | Oct 25, 2022 | Ended | Jul 19, 2023 | 2.0.14 | No | EOL |
| 1.9 | Mar 11, 2022 | Ended | Dec 5, 2022 | 1.9.10 | No | EOL |
| 1.8 | Jul 7, 2021 | Ended | Dec 5, 2022 | 1.8.15 | No | EOL |
| 1.7 | Feb 14, 2021 | Ended | Ended; date not announced | 1.7.9 | No | EOL |
| 1.6 | Oct 8, 2020 | Ended | Ended; date not announced | 1.6.10 | No | EOL |
| 1.5 | Jul 13, 2020 | Ended | Ended; date not announced | 1.5.7 | No | EOL |
| 1.4 | Mar 25, 2020 | Ended | Ended; date not announced | 1.4.6 | No | EOL |
| 1.3 | Sep 30, 2019 | Ended | Ended; date not announced | 1.3.11 | No | EOL |
| 1.2 | Jun 26, 2019 | Ended | Ended; date not announced | 1.2.2 | No | EOL |
| 1.1 | May 8, 2019 | Ended | Ended; date not announced | 1.1.3 | No | EOL |
| 1.0 | Dec 13, 2018 | Ended | Ended; date not announced | 1.0.6 | No | EOL |
| 0.14 | Aug 29, 2018 | Ended | Ended; date not announced | 0.14.9 | No | EOL |
| 0.13 | Apr 30, 2018 | Ended | Ended; date not announced | 0.13.8 | No | EOL |
| 0.12 | Aug 17, 2017 | Ended | Ended; date not announced | 0.12.19 | No | EOL |
| 0.11 | Mar 30, 2017 | Ended | Ended; date not announced | 0.11.17 | No | EOL |
| 0.10 | Dec 30, 2016 | Ended | Ended; date not announced | 0.10.1 | No | EOL |
Data sources
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<a href="https://eol.wiki/fluent-bit/"><img src="https://eol.wiki/badge/fluent-bit.svg" alt="Fluent Bit end-of-life status" height="20"></a>Frequently Asked Questions
Which versions of Fluent Bit have reached end of life?
The following Fluent Bit versions have reached end of life and no longer receive security updates: 4.2, 4.1, 4.0, 3.2, 3.1, 3.0, 2.2, 2.1 (and 16 more). It is recommended to upgrade to a supported version.
Is it safe to continue using Fluent Bit 4.2?
Fluent Bit 4.2 has reached end of life and no longer receives security patches or bug fixes. Continuing to use it may expose your systems to known vulnerabilities. We strongly recommend upgrading to a supported version.
What is the latest version of Fluent Bit?
The latest version of Fluent Bit is 5.1.2, released in the 5.1 release cycle.
How many versions of Fluent Bit are currently supported?
Fluent Bit currently has 2 actively supported version(s): 5.1, 5.0.
When does Fluent Bit 5.1 reach end of life?
Fluent Bit 5.1 does not have a specific end-of-life date announced yet.
What should I do when Fluent Bit reaches end of life?
When a Fluent Bit version reaches end of life, you should: 1) Plan your migration to a supported version as soon as possible. 2) Review the release notes for breaking changes. 3) Test your applications thoroughly in a staging environment. 4) Update your dependencies to ensure compatibility with the new version.