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-rw-r--r--activesupport/lib/active_support/core_ext/class/attribute.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/core_ext/class/attribute.rb b/activesupport/lib/active_support/core_ext/class/attribute.rb
index a6da65e96d..a72dbc7bf0 100644
--- a/activesupport/lib/active_support/core_ext/class/attribute.rb
+++ b/activesupport/lib/active_support/core_ext/class/attribute.rb
@@ -1,4 +1,5 @@
# frozen_string_literal: true
+
require_relative "../kernel/singleton_class"
require_relative "../module/remove_method"
require_relative "../array/extract_options"