diff --git a/lib/airborne/base.rb b/lib/airborne/base.rb
index aeddc16..97d4f35 100644
--- a/lib/airborne/base.rb
+++ b/lib/airborne/base.rb
@@ -1,5 +1,5 @@
 require 'json'
-require 'active_support/core_ext'
+require 'active_support/hash_with_indifferent_access'
 
 module Airborne
 	include RequestExpectations