diff --git a/lib/bulletin_model/cache.rb b/lib/bulletin_model/cache.rb
index 7da6eb9..190c0f4 100644
--- a/lib/bulletin_model/cache.rb
+++ b/lib/bulletin_model/cache.rb
@@ -4,6 +4,7 @@ module BulletinModel
     extend ActiveSupport::Concern
     included do
       before_save :do_before_save
+      before_destroy :do_before_save
     end
     def do_before_save
       if self.class == SubPart