Jruby 9.x — End of Life
ActiveJruby 9.x is partially supported: only 9.4 still receives security fixes. The most recent release in this series is 9.4.15.0. No CVE is currently tracked for Jruby 9.x. The next major version is Jruby 10. See Jruby 10 →
Jruby 9.x — All releases
| Version | Released | Active support | EOL date | Latest patch | Status | Alert me |
|---|---|---|---|---|---|---|
| 9.4 | Nov 23, 2022 | — | No | 9.4.15.0 | Active | |
| 9.3 | Sep 22, 2021 | — | Jun 26, 2024 | 9.3.15.0 | EOL | |
| 9.2 | May 24, 2018 | — | Jun 27, 2022 | 9.2.21.0 | EOL | |
| 9.1 | May 2, 2016 | — | Apr 20, 2018 | 9.1.17.0 | EOL | |
| 9.0 | Jul 21, 2015 | — | Jan 30, 2016 | 9.0.5.0 | EOL |
CVEs affecting Jruby 9.x (0)
Jruby 9.x will reach end of life — migrate to Jruby 10.x
Jruby 10.x is the next major release. Plan your upgrade before Jruby 9.x stops receiving security patches.
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[](https://eolcanary.com/explore/jruby/9)Frequently asked questions
Is Jruby 9 end of life?
Partially. 4 of the 5 Jruby 9.x releases have reached end of life. Still supported: 9.4.
What CVEs affect Jruby 9?
No CVEs are currently tracked for Jruby 9.x in the NVD data we monitor.
What is the latest Jruby 9 version?
The latest Jruby 9.x patch release is 9.4.15.0, released on June 8, 2026. Always run the latest patch to benefit from all security fixes.
How to migrate from Jruby 9 to Jruby 10?
To migrate from Jruby 9 to Jruby 10: (1) review the official Jruby 10 migration guide for breaking changes, (2) update dependencies and configuration accordingly, (3) test thoroughly in a staging environment, (4) deploy with a rollback plan. Starting early gives you time to resolve compatibility issues before your current version reaches end of life.
Is it safe to run Jruby 9 in production?
Only on a supported release (9.4). Make sure you run the latest patch (9.4.15.0) to have all security fixes applied.
Data sourced from endoflife.date · CVE data from NVD · EPSS from FIRST.org · KEV from CISA