diff --git a/lib/name_of_person/loaders/active_model_has_person_name.rb b/lib/name_of_person/loaders/active_model_has_person_name.rb
index ab11f76..269d22c 100644
--- a/lib/name_of_person/loaders/active_model_has_person_name.rb
+++ b/lib/name_of_person/loaders/active_model_has_person_name.rb
@@ -1,4 +1,4 @@
-if ActiveSupport.gem_version < "7.1.0.alpha"
+if ActiveSupport.gem_version < Gem::Version.new('7.1.0.alpha')
   if defined?(ActiveModel)
     ActiveModel::Model.send :include, NameOfPerson::HasPersonName
   end