We don’t have immediate plans to upgrade these dependencies in the aptible-cli gem. Instead of installing the Aptible CLI using gem install aptible-cli, we now recommend installing via the Aptible Toolbelt packager, which has builds for macOS, Ubuntu, Debian and RHEL — so it should work both on your local computer as well as in any CI environment: https://www.aptible.com/support/toolbelt
The Aptible Toolbelt has the advantage that it comes with an embedded Ruby/RubyGems, so that there can never be any conflict with your own gemset or Bundler Gemfile. This also means Aptible Toolbelt is much faster than gem-installed aptible-cli to load, because of some inefficiencies in RubyGems’ dependency resolution.