diff --git a/test/setter_trap.rb b/test/setter_trap.rb
index cccbf3c8a5..586b2dff49 100644
--- a/test/setter_trap.rb
+++ b/test/setter_trap.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class SetterTrap < ActiveSupport::ProxyObject
+class SetterTrap < BasicObject
   class << self
     def rollback_sets(obj)
       trapped = new(obj)