diff --git a/Appraisals b/Appraisals
index dc4de30..b1c8577 100644
--- a/Appraisals
+++ b/Appraisals
@@ -11,7 +11,11 @@ appraise 'rails-41' do
   gem 'rails', '~> 4.1.1'
 end
 
+appraise 'rails-42' do
+  gem 'rails', '~> 4.2.0'
+end
+
 appraise 'rails-5' do
-  gem 'rails', '~> 5.0'
+  gem 'rails', '~> 5.0.0'
   gem 'rails-controller-testing'
 end
diff --git a/gemfiles/rails_3.gemfile b/gemfiles/rails_3.gemfile
index bbd9aa2..f37b0d3 100644
--- a/gemfiles/rails_3.gemfile
+++ b/gemfiles/rails_3.gemfile
@@ -5,4 +5,4 @@ source "https://rubygems.org"
 gem "rails", "~> 3.2.18"
 gem "test-unit", "~> 3.0"
 
-gemspec :path => "../"
+gemspec path: "../"
diff --git a/gemfiles/rails_4.gemfile b/gemfiles/rails_4.gemfile
index 39a1bd6..4f47847 100644
--- a/gemfiles/rails_4.gemfile
+++ b/gemfiles/rails_4.gemfile
@@ -4,4 +4,4 @@ source "https://rubygems.org"
 
 gem "rails", "~> 4.0.5"
 
-gemspec :path => "../"
+gemspec path: "../"
diff --git a/gemfiles/rails_41.gemfile b/gemfiles/rails_41.gemfile
index 8dfe1fe..7e4bd92 100644
--- a/gemfiles/rails_41.gemfile
+++ b/gemfiles/rails_41.gemfile
@@ -4,4 +4,4 @@ source "https://rubygems.org"
 
 gem "rails", "~> 4.1.1"
 
-gemspec :path => "../"
+gemspec path: "../"
diff --git a/gemfiles/rails_42.gemfile b/gemfiles/rails_42.gemfile
new file mode 100644
index 0000000..6977eb0
--- /dev/null
+++ b/gemfiles/rails_42.gemfile
@@ -0,0 +1,7 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "rails", "~> 4.2.0"
+
+gemspec path: "../"
diff --git a/gemfiles/rails_5.gemfile b/gemfiles/rails_5.gemfile
index 265a9a1..0ab3b69 100644
--- a/gemfiles/rails_5.gemfile
+++ b/gemfiles/rails_5.gemfile
@@ -2,7 +2,7 @@
 
 source "https://rubygems.org"
 
-gem "rails", "~> 5.0"
+gem "rails", "~> 5.0.0"
 gem "rails-controller-testing"
 
-gemspec :path => "../"
+gemspec path: "../"
diff --git a/test/dummy/config/boot.rb b/test/dummy/config/boot.rb
index ef36047..6266cfc 100644
--- a/test/dummy/config/boot.rb
+++ b/test/dummy/config/boot.rb
@@ -1,5 +1,5 @@
 # Set up gems listed in the Gemfile.
 ENV['BUNDLE_GEMFILE'] ||= File.expand_path('../../../../Gemfile', __FILE__)
 
-require 'bundler/setup' if File.exists?(ENV['BUNDLE_GEMFILE'])
+require 'bundler/setup' if File.exist?(ENV['BUNDLE_GEMFILE'])
 $LOAD_PATH.unshift File.expand_path('../../../../lib', __FILE__)