diff --git a/db/migrate/20210219212931_change_cursor_to_string.rb b/db/migrate/20210219212931_change_cursor_to_string.rb
index 9f7e7a26..397c04bd 100644
--- a/db/migrate/20210219212931_change_cursor_to_string.rb
+++ b/db/migrate/20210219212931_change_cursor_to_string.rb
@@ -12,7 +12,7 @@ def up
 
   def down
     change_table(:maintenance_tasks_runs) do |t|
-      t.change(:cursor, :bigint)
+      t.change(:cursor, "bigint USING cursor::bigint")
     end
   end
 end