diff --git a/app/models/group.rb b/app/models/group.rb
index f33250410ec..0f85725caba 100644
--- a/app/models/group.rb
+++ b/app/models/group.rb
@@ -5,7 +5,6 @@ require 'net/imap'
 class Group < ActiveRecord::Base
   # TODO(2021-05-26): remove
   self.ignored_columns = %w{
-    automatic_membership_retroactive
     flair_url
   }