bin/test in ruboclean-0.3.0 vs bin/test in ruboclean-0.4.0

@@ -18,10 +18,10 @@
     chdir APP_ROOT do
       puts "\n== Run tests =="
       system! "bundle exec rake test"
 
       puts "\n== Run rubocop =="
-      system! "bundle exec rubocop -p"
+      system! "bundle exec rubocop --parallel"
     end
   end
 end
 
 BinTest.new.run