diff --git a/db/migrate/20241208102932_allow_ungrouped_guests.rb b/db/migrate/20241208102932_allow_ungrouped_guests.rb
index e4bb19a..c06d40c 100644
--- a/db/migrate/20241208102932_allow_ungrouped_guests.rb
+++ b/db/migrate/20241208102932_allow_ungrouped_guests.rb
@@ -1,3 +1,5 @@
+# Copyright (C) 2024 Manuel Bustillo
+
 class AllowUngroupedGuests < ActiveRecord::Migration[8.0]
   def change
     change_column_null :guests, :group_id, true
diff --git a/db/schema.rb b/db/schema.rb
index e8f6c9f..0684e19 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -1,3 +1,5 @@
+# Copyright (C) 2024 Manuel Bustillo
+
 # This file is auto-generated from the current state of the database. Instead
 # of editing this file, please use the migrations feature of Active Record to
 # incrementally modify your database, and then regenerate this schema definition.