diff --git a/lib/active_model_serializers/test/serializer.rb b/lib/active_model_serializers/test/serializer.rb
index a122d31d..5e1b826b 100644
--- a/lib/active_model_serializers/test/serializer.rb
+++ b/lib/active_model_serializers/test/serializer.rb
@@ -69,10 +69,6 @@ module ActiveModelSerializers
           end
         end
 
-        def unsubscribe
-          ActiveSupport::Notifications.unsubscribe(event_name)
-        end
-
         private
 
         def matches_class?