JRuby Released

Tuesday, November 02 2021

The JRuby community is pleased to announce the release of JRuby

JRuby 9.2.x is compatible with Ruby 2.5.x and stays in sync with C Ruby. As always there is a mix of miscellaneous fixes so be sure to read the issue list below. All users are encouraged to upgrade.


Standard Library

  • jruby-openssl has been updated to 0.11.0, which includes fixes for expired and replaced certificate verification. (#6871, #6909)

Native Integration

  • The built-in FFI library has been updated to match the FFI gem, and can now be upgraded independently of JRuby. (#6732, #6747)
  • FFI-based core methods on Windows and Solaris have been modified to delay activating FFI until after RubyGems has loaded any upgrades. (#6751, #6760, #6762)

Java Integration

  • Nested jar files (jars packaged within another application jar) should load more quickly with caching improvements. (#6730, #6734, #6740)

  • 39 issues fixed for

Github Issues resolved for