diff --git a/activesupport/lib/active_support/rescuable.rb b/activesupport/lib/active_support/rescuable.rb
index c27c4ddb1a..0abbe1cd2a 100644
--- a/activesupport/lib/active_support/rescuable.rb
+++ b/activesupport/lib/active_support/rescuable.rb
@@ -1,3 +1,5 @@
+require 'active_support/core_ext/class/inheritable_attributes'
+
 module ActiveSupport
   # Rescuable module adds support for easier exception handling.
   module Rescuable