diff --git a/Gemfile b/Gemfile
index 46e0766..3fc386a 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,3 +1,12 @@
-source :rubygems
+source 'https://rubygems.org'
 
-gem 'test-kitchen', '< 1.0'
+gem 'strainer'
+gem 'berkshelf',  '~> 2.0'
+gem 'chefspec',   '~> 3.0'
+gem 'foodcritic', '~> 3.0'
+gem 'rubocop',    '~> 0.14'
+
+group :integration do
+  gem 'test-kitchen',    '~> 1.0.0.beta.4'
+  gem 'kitchen-vagrant', '~> 0.11'
+end