source 'https://rubygems.org' git_source(:github) { |repo_name| "https://github.com/#{repo_name}" } # Specify your gem's dependencies in postman_mta.gemspec gemspec group :development, :test do gem 'rails', '~> 5.0' gem 'rspec-rails', '~> 3.5', '>= 3.5.2' gem 'sqlite3', '~> 1.3', '>= 1.3.13' gem 'webmock', '~> 3.0', '>= 3.0.1' end