RubyGems 4.0.2 includes enhancements and Bundler 4.0.2 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=4.0.2 RubyGems Release Notes Enhancements: Pass down value of BUNDLE_JOBS to RubyGems before compiling & introduce a new gem install -j flag. Pull request #9171 by Edouard-chin Installs bundler 4.0.2 as a default gem.