diff --git a/lib/ar/sequence.rb b/lib/ar/sequence.rb
index fca5ee4..31b71bb 100644
--- a/lib/ar/sequence.rb
+++ b/lib/ar/sequence.rb
@@ -22,4 +22,6 @@ module Sequence
   AR::Sequence::Adapter
 )
 ActiveRecord::SchemaDumper.prepend(AR::Sequence::SchemaDumper)
-ActiveRecord::Base.extend(AR::Sequence::ModelMethods)
+ActiveSupport.on_load(:active_record) do
+  self.extend(AR::Sequence::ModelMethods)
+end
\ No newline at end of file