Gemfile

source "https://rubygems.org"

# To upgrade, run `bundle update github-pages`.
group :jekyll_plugins do
  gem "github-pages"
  gem "jekyll-feed"
  gem "jekyll-seo-tag"
  gem "jekyll-sitemap"
end

install_if -> { RUBY_VERSION >= "3.0" } do
  gem "webrick", "~> 1.7"
end