Appraisals in loaf-0.5.0 vs Appraisals in loaf-0.6.0

@@ -1,18 +1,36 @@
-if RUBY_VERSION < "2.2.0"
+if RUBY_VERSION < '2.2.0'
   appraise 'rails3.2' do
-    gem 'rails', '~> 3.2.21'
+    gem 'rails', '~> 3.2.22.5'
+    gem 'test-unit', '~> 3.0'
   end
 end
 
-appraise 'rails4.0' do
-  gem 'rails', '~> 4.0.13'
-  gem 'test-unit'
-end
+if RUBY_VERSION < '2.4.0'
+  appraise 'rails4.0' do
+    gem 'rails', '~> 4.0.13'
+    gem 'test-unit'
+    gem 'mime-types', '~> 2.99'
+  end
 
-appraise 'rails4.1' do
-  gem 'rails', '~> 4.1.9'
+  appraise 'rails4.1' do
+    gem 'rails', '~> 4.1.16'
+    gem 'mime-types', '~> 2.99'
+  end
 end
 
 appraise 'rails4.2' do
-  gem 'rails', '~> 4.2.0'
+  gem 'rails', '~> 4.2.9'
+  gem 'mime-types', '~> 2.99'
+end
+
+if RUBY_VERSION >= '2.2.0'
+  appraise 'rails5.0' do
+    gem 'rails', '~> 5.0.6'
+    gem 'rspec-rails', '~> 3.6.1'
+  end
+
+  appraise 'rails5.1' do
+    gem 'rails', '~> 5.1.4'
+    gem 'rspec-rails', '~> 3.6.1'
+  end
 end