Gemfile in haml-5.0.1 vs Gemfile in haml-5.0.2

@@ -1,7 +1,8 @@
 source "https://rubygems.org"
 gemspec
 
+gem "m"
 gem "pry"
 
 group :docs do
   gem "yard", "~> 0.8.0"
   gem "kramdown"