Gemfile in rouge-3.27.0 vs Gemfile in rouge-3.28.0

@@ -35,7 +35,10 @@
   if RUBY_VERSION < '2.2.0'
     gem 'sinatra', '~> 1.4.8'
   else
     gem 'sinatra'
   end
+
+  # Ruby 3 no longer ships with a web server
+  gem 'puma' if RUBY_VERSION >= '3'
   gem 'shotgun'
 end