Update spec_helper.rb (#5272)

rmzelle · web-flow · commit 20046d29a56d · 2021-02-14T23:13:27.000-05:00
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
@@ -1,5 +1,6 @@
 require 'csl'
 require 'json'
+require 'yaml'
 
 STYLE_ROOT = File.expand_path('../..', __FILE__)
 
