JRuby 9.3 End of Life
Support dates and upgrade guidance — rebuilt from live data.
End of Life
JRuby 9.3 reached end of life on 26 Jun 2024. It no longer receives security fixes.
774 days without security patches
Recommended action: upgrade to JRuby 10.1. Check your versionjruby --version
Support timeline
Official dates from the JRuby release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 22 Sept 2021 | — |
| End of life | 26 Jun 2024 | 2.1 years ago |
| Latest release | 9.3.15.0 · 26 Jun 2024 | final |
Where to go from 9.3
Recommended target: JRuby 10.1.
The newest actively supported branch is JRuby 10.1 (latest release 10.1.1.0).
Frequently asked questions
Is JRuby 9.3 still safe to use?
JRuby 9.3 reached end of life on 26 Jun 2024, 774 days ago, and is no longer covered by standard support. Running it means no guaranteed security fixes.
Can I still download JRuby 9.3?
Yes — the final release (9.3.15.0) generally remains available from vendor archives and OS package mirrors, but installing it means running software with known, unpatched vulnerabilities.
What should I upgrade JRuby 9.3 to?
Upgrade to JRuby 10.1, the newest actively supported branch.