diff --git a/activesupport/lib/active_support/number_helper.rb b/activesupport/lib/active_support/number_helper.rb
index c75ad52b0c..d19a2f64d4 100644
--- a/activesupport/lib/active_support/number_helper.rb
+++ b/activesupport/lib/active_support/number_helper.rb
@@ -1,5 +1,7 @@
 # frozen_string_literal: true
 
+require "active_support/dependencies/autoload"
+
 module ActiveSupport
   module NumberHelper
     extend ActiveSupport::Autoload