Updates
Summary I tried rebuilding today after 7 months of forgetting how this works and when I tried to jekyll build I got $ jekyll build Traceback (most recent call last): ... /usr/local/Cellar/ruby/2.6.5/lib/ruby/2.6.0/bundler/lockfile_parser.rb:108:in `warn_for_outdated_bundler_version': You must use Bundler 2 or greater with this lockfile. (Bundler::LockfileError) Per this answer, I ran gem list bundler to see my rubygems version and then gem update --system $ gem list bundler *** LOCAL GEMS *** bundler (2....