Gemfile in html-pipeline-2.4.1 vs Gemfile in html-pipeline-2.4.2

@@ -4,13 +4,14 @@
 gemspec
 
 group :development do
   gem "bundler"
   gem "rake"
+  gem "appraisal"
 end
 
 group :test do
-  gem "minitest",           "~> 5.3"
+  gem "minitest"
   gem "rinku",              "~> 1.7",   :require => false
   gem "gemoji",             "~> 2.0",   :require => false
   gem "RedCloth",           "~> 4.2.9", :require => false
   gem "github-markdown",    "~> 0.5",   :require => false
   gem "email_reply_parser", "~> 0.5",   :require => false