Ruby gem: activerecord
gem install activerecord -v 4.1.12 gem 'activerecord', '~> 4.1.12' To lock this gem at this specific version, update your Gemfile:
gem 'activerecord', '4.1.12' Then run:
bundle install Note: This is an older version. Consider upgrading to the latest version (8.1.1) for the newest features and security fixes.