RubyGems 4.0.12 includes enhancements and bug fixes and Bundler 4.0.12 includes enhancements and bug fixes. To update to the latest RubyGems you can run: gem update –system [–pre] To update to the latest Bundler you can run: gem install bundler [–pre] bundle update –bundler=4.0.12 RubyGems Release Notes Enhancements: Remove cygwin from WIN_PATTERNS. Pull request #9527 by fd00 Installs bundler 4.0.12 as a default gem.