source 'https://rubygems.org' ruby '>= 2.4.0', '< 2.8.0' gem 'bundler', '>= 1.12.0' gem 'rails', '5.2.5' gem 'sprockets', '~> 3.7.2' if RUBY_VERSION < '2.5' gem 'rouge', '~> 3.26.0' gem 'request_store', '~> 1.5.0' gem "mini_mime", "~> 1.0.1" gem "actionpack-xml_parser" gem 'roadie-rails', (RUBY_VERSION < '2.5' ? '~> 1.3.0' : '~> 2.2.0') gem 'marcel' gem "mail", "~> 2.7.1" gem 'csv', (RUBY_VERSION < '2.5' ? ['>= 3.1.1', '<= 3.1.5'] : '~> 3.1.1') gem 'nokogiri', (RUBY_VERSION < '2.5' ? '~> 1.10.0' : '~> 1.11.1') gem 'i18n', '~> 1.8.2' gem "rbpdf", "~> 1.20.0" gem 'addressable' gem 'rubyzip', '~> 2.3.0' gem 'puma' # <- 追記 ...