source 'https://rubygems.org' gem 'jekyll', '~> 4.2', '>= 4.2.2' gem 'kramdown-parser-gfm', '~> 1.1' gem 'webrick', '~> 1.7' group :jekyll_plugins do gem 'jekyll-feed', '~> 0.16.0' gem 'jekyll-seo-tag', '~> 2.8' end