diff --git a/db/migrate/20240519110747_add_require_fields_to_proposals.rb b/db/migrate/20240519110747_add_require_fields_to_proposals.rb
index 0794458..e409319 100644
--- a/db/migrate/20240519110747_add_require_fields_to_proposals.rb
+++ b/db/migrate/20240519110747_add_require_fields_to_proposals.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class AddRequireFieldsToProposals < ActiveRecord::Migration[6.1]
   def change
     add_column :decidim_proposals_proposals, :require_category, :boolean