RubyGems and Bundler 4.1.0.beta2 include features, enhancements, breaking changes 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=4.1.0.beta2 Release Notes RubyGems Changes already released in 4.0.x are not repeated here. Features: Support content addressable gems in Gem::PackageTask .