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-rw-r--r--activesupport/lib/active_support/current_attributes.rb2
1 files changed, 2 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/current_attributes.rb b/activesupport/lib/active_support/current_attributes.rb
index 4e6d8e4585..3145ff87a1 100644
--- a/activesupport/lib/active_support/current_attributes.rb
+++ b/activesupport/lib/active_support/current_attributes.rb
@@ -1,5 +1,7 @@
# frozen_string_literal: true
+require "active_support/callbacks"
+
module ActiveSupport
# Abstract super class that provides a thread-isolated attributes singleton, which resets automatically
# before and after each request. This allows you to keep all the per-request attributes easily