Gemfile in vagrant-config_builder-1.0.0 vs Gemfile in vagrant-config_builder-1.1.0

- old
+ new

@@ -1,8 +1,8 @@
 source 'https://rubygems.org'
 
-ENV['TEST_VAGRANT_VERSION'] ||= 'v1.8.1'
+ENV['TEST_VAGRANT_VERSION'] ||= 'v1.8.4'
 
 # Wrapping gemspec in the :plugins group causes Vagrant 1.5 and newer to
 # automagically load this plugin during acceptance tests.
 group :plugins do
   gemspec
@@ -16,9 +16,12 @@
 group :test do
   if ENV['TEST_VAGRANT_VERSION'] == 'HEAD'
     gem 'vagrant', :github => 'mitchellh/vagrant', :branch => 'master'
   else
     gem 'vagrant', :github => 'mitchellh/vagrant', :tag => ENV['TEST_VAGRANT_VERSION']
+    # FIXME: Hack to allow Vagrant v1.6.5 to install for tests. Remove when
+    # support for 1.6.5 is dropped.
+    gem 'rack', '< 2'
   end
 
   # Pinned on 2/21/2016. Compatible with Vagrant 1.6.x?, 1.7.x? and 1.8.x.
   gem 'vagrant-spec', :github => 'mitchellh/vagrant-spec', :ref => '9bba7e1'
 end