Gemfile in vagrant-adam-0.4.0a vs Gemfile in vagrant-adam-0.5.0a

@@ -6,9 +6,10 @@
   # We depend on Vagrant for development, but we don't add it as a
   # gem dependency because we expect to be installed within the
   # Vagrant environment itself using `vagrant plugin`.
   gem 'vagrant', git: 'git://github.com/mitchellh/vagrant.git', tag: 'v1.4.3'
   gem 'cucumber', git: 'https://github.com/cucumber/cucumber.git', tag: 'v2.0.0.beta.2'
+  gem 'cucumber-core', git: 'https://github.com/cucumber/cucumber-core.git', tag: 'v1.0.0.beta.2'
 end
 
 group :acceptance do
   gem 'vagrant-digitalocean', '~> 0.5.3'
   gem 'vagrant-aws', '~> 0.4.0'