attributor.rb in attributor-5.5

- old
+ new

@@ -1,9 +1,9 @@
 require 'json'
 require 'randexp'
 
 require 'hashie'
-
+require 'active_support/concern'
 require 'digest/sha1'
 
 module Attributor
   require_relative 'attributor/dumpable'
 