Gemfile in vagrant-pe_build-0.17.14 vs Gemfile in vagrant-pe_build-0.18.0

@@ -1,8 +1,8 @@
 source 'https://rubygems.org'
 require 'rubygems/version'
 
-vagrant_branch = ENV['TEST_VAGRANT_VERSION'] || 'v2.1.2'
+vagrant_branch = ENV['TEST_VAGRANT_VERSION'] || 'v2.1.5'
 vagrant_version = nil
 
 # Wrapping gemspec in the :plugins group causes Vagrant 1.5 and newer to
 # automagically load this plugin during acceptance tests.
 group :plugins do