RubyGemsをダウンロード v3.4.19 - August 17, 2023

RubyGems is a package management framework for Ruby. Download the latest version here:

Or, to upgrade to the latest RubyGems:

$ gem update --system

You might be running into some bug that prevents you from upgrading rubygems the standard way. In that case, you can try upgrading manually:

1. Download from above
2. Unpack into a directory and cd there
3. Install with: ruby setup.rb

For more details and other options, see:

ruby setup.rb --help