diff --git a/migrations/2024_01_31_update_polls_set_post_id_nullable.php b/migrations/2024_01_31_update_polls_set_post_id_nullable.php
index 5085dbec..8d2410bc 100644
--- a/migrations/2024_01_31_update_polls_set_post_id_nullable.php
+++ b/migrations/2024_01_31_update_polls_set_post_id_nullable.php
@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of fof/polls.
+ *
+ * Copyright (c) FriendsOfFlarum.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 use Illuminate\Database\Schema\Blueprint;
 use Illuminate\Database\Schema\Builder;