source "https://rubygems.org" gem "jekyll", "~> 4.2.0" group :jekyll_plugins do gem "jekyll-feed", "~> 0.12" gem "jekyll-seo-tag", "~> 2.7" end platforms :mingw, :x64_mingw, :mswin, :jruby do gem "tzinfo", "~> 1.2" gem "tzinfo-data" end gem "wdm", "~> 0.1.1", :platforms => [:mingw, :x64_mingw, :mswin]