diff --git a/activejob/lib/active_job/serializers/object_serializer.rb b/activejob/lib/active_job/serializers/object_serializer.rb
index c3ca1672851ad..2b39915d57ee2 100644
--- a/activejob/lib/active_job/serializers/object_serializer.rb
+++ b/activejob/lib/active_job/serializers/object_serializer.rb
@@ -1,5 +1,7 @@
 # frozen_string_literal: true
 
+require "singleton"
+
 module ActiveJob
   module Serializers
     # Base class for serializing and deserializing custom objects.
diff --git a/activesupport/lib/active_support/deprecation.rb b/activesupport/lib/active_support/deprecation.rb
index ad96ecb946f53..e07994be44410 100644
--- a/activesupport/lib/active_support/deprecation.rb
+++ b/activesupport/lib/active_support/deprecation.rb
@@ -1,7 +1,5 @@
 # frozen_string_literal: true
 
-require "singleton"
-
 module ActiveSupport
   # = Active Support \Deprecation
   #