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-rw-r--r--activesupport/lib/active_support/hash_with_indifferent_access.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/hash_with_indifferent_access.rb b/activesupport/lib/active_support/hash_with_indifferent_access.rb
index 3d8f2d572b..1468c62151 100644
--- a/activesupport/lib/active_support/hash_with_indifferent_access.rb
+++ b/activesupport/lib/active_support/hash_with_indifferent_access.rb
@@ -1,4 +1,5 @@
require 'active_support/core_ext/hash/keys'
+require 'active_support/core_ext/hash/reverse_merge'
module ActiveSupport
# Implements a hash where keys <tt>:foo</tt> and <tt>"foo"</tt> are considered