Gemfile in blacklight-6.20.0 vs Gemfile in blacklight-6.21.0

@@ -30,9 +30,11 @@
       gem 'rails', ENV['RAILS_VERSION']
     end
   end
 
   case ENV['RAILS_VERSION']
+  when /^5.[12]/
+    gem 'sass-rails', '~> 5.0'
   when /^4.2/
     gem 'responders', '~> 2.0'
     gem 'sass-rails', '>= 5.0'
     gem 'coffee-rails', '~> 4.1.0'
     gem 'json', '~> 1.8'