diff --git a/skeleton/Gemfile b/skeleton/Gemfile
index b699195..67bb002 100644
--- a/skeleton/Gemfile
+++ b/skeleton/Gemfile
@@ -19,6 +19,7 @@ group :test do
   gem "puppet-lint-classes_and_types_beginning_with_digits-check"
   gem "puppet-lint-unquoted_string-check"
   gem 'puppet-lint-resource_reference_syntax'
+  gem 'puppet-lint-reference_on_declaration_outside_of_class-check'
 end
 
 group :development do