Guardfile in grape-0.11.0 vs Guardfile in grape-0.12.0

@@ -3,8 +3,8 @@
   watch(%r{^lib/(.+)\.rb$})     { |m| "spec/#{m[1]}_spec.rb" }
   watch('spec/spec_helper.rb')  { 'spec' }
 end
 
 guard :rubocop do
-  watch(%r{.+\.rb$})
+  watch(/.+\.rb$/)
   watch(%r{(?:.+/)?\.rubocop\.yml$}) { |m| File.dirname(m[0]) }
 end