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-rw-r--r--activerecord/lib/active_record/nested_attributes.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/nested_attributes.rb b/activerecord/lib/active_record/nested_attributes.rb
index 70a460d41d..6718b4a69d 100644
--- a/activerecord/lib/active_record/nested_attributes.rb
+++ b/activerecord/lib/active_record/nested_attributes.rb
@@ -1,6 +1,7 @@
require 'active_support/core_ext/hash/except'
require 'active_support/core_ext/object/try'
require 'active_support/core_ext/object/blank'
+require 'active_support/core_ext/hash/indifferent_access'
module ActiveRecord
module NestedAttributes #:nodoc: