I've never really used JRuby but this is really exciting: new version release is compatible with Ruby 4.0.

Additionally, due to the hard work of @katafrakt with help from @headius, all dry-rb gems support JRuby now :)

https://www.jruby.org/2026/04/21/jruby-10-1-0-0.html

JRuby 10.1.0.0 Released — JRuby.org