Fix Appveyor and deal with multiple gemspecsruby22

Signed-off-by: Thom May <thom@chef.io>

1 files changed, 2 insertions, 2 deletions

diff --git a/Rakefile b/Rakefile
index dbd6f4f..03c1c26 100644
--- a/Rakefile
+++ b/Rakefile
@@ -1,7 +1,7 @@
-require 'bundler'
+require "bundler"
 require "rspec/core/rake_task"
 
-Bundler::GemHelper.install_tasks
+Bundler::GemHelper.install_tasks name: "mixlib-shellout"
 
 require "chefstyle"
 require "rubocop/rake_task"