Gemfile in shortcode-1.1.1 vs Gemfile in shortcode-1.2.0

@@ -1,6 +1,6 @@
 source 'https://rubygems.org'
 
 # Specify your gem's dependencies in shortcode.gemspec
 gemspec
 
-gem 'appraisal', '2.1.0'
+gem 'appraisal', '2.2.0'