Appraisals in csso-rails-0.7.0 vs Appraisals in csso-rails-0.7.1

@@ -9,17 +9,24 @@
 appraise "sprockets-3" do
   gem "sprockets", "~>3.0"
 end
 
 appraise "sprockets-4" do
-  gem "sprockets", "~>4.0.0.beta2"
+  gem "sprockets", "~>4.0.0.beta4"
   gem 'sass', '>=3.3'
 end
 
-appraise "rails-4" do
-  gem "rails", '4.2.5.1'
+appraise "rails-4.2" do
+  gem "rails", '~>4.2.0'
 end
 
+appraise "rails-5.0" do
+  gem "rails", '~>5.0.0'
+end
+
+appraise "rails-5.1" do
+  gem "rails", '~>5.1.0'
+end
 
 appraise "therubyracer" do
   #TODO: currently rubyracer segfaults on my machine, fix that and start testing
   # gem "therubyracer"
 end