The JRuby community is pleased to announce the release of JRuby 9.4.12.1.

  -  Homepage: https://www.jruby.org/
  -  Download: https://www.jruby.org/download

JRuby 9.4.12.x targets Ruby 3.1 compatibility.
Security

    jruby-openssl has been updated to 0.15.4, which re-enables hostname verification by default. This addresses CVE-2025-46551 and GHSA-72qj-48g4-5xgx.