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-rw-r--r--railties/lib/rails/configuration.rb2
1 files changed, 2 insertions, 0 deletions
diff --git a/railties/lib/rails/configuration.rb b/railties/lib/rails/configuration.rb
index 493eacdc5a..7baebed882 100644
--- a/railties/lib/rails/configuration.rb
+++ b/railties/lib/rails/configuration.rb
@@ -1,6 +1,8 @@
require 'active_support/deprecation'
require 'active_support/ordered_options'
+require 'active_support/core_ext/object'
require 'active_support/core_ext/hash/deep_dup'
+require 'active_support/core_ext/array/deep_dup'
require 'rails/paths'
require 'rails/rack'