Gemfile in chef-vault-3.0.0.rc1 vs Gemfile in chef-vault-3.0.0.rc2

@@ -1,8 +1,9 @@
 source "https://rubygems.org/"
 
 group :development do
   gem "chefstyle", git: "https://github.com/chef/chefstyle.git"
+  gem "chef-zero"
 end
 
 group :changelog do
   gem "github_changelog_generator", "1.11.3"
 end