diff --git a/migrations/2023_11_27_000000_modify_posts_add_index_to_ip_address_column.php b/migrations/2023_11_27_000000_modify_posts_add_index_to_ip_address_column.php
new file mode 100644
index 0000000..1941b32
--- /dev/null
+++ b/migrations/2023_11_27_000000_modify_posts_add_index_to_ip_address_column.php
@@ -0,0 +1,28 @@
+<?php
+
+/*
+ * This file is part of fof/ban-ips.
+ *
+ * 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;
+
+return [
+    'up' => function (Builder $schema) {
+        $schema->table('posts', function (Blueprint $table) {
+            $table->index('ip_address');
+            $table->index(['user_id', 'ip_address']);
+        });
+    },
+    'down' => function (Builder $schema) {
+        $schema->table('posts', function (Blueprint $table) {
+            $table->dropIndex(['ip_address']);
+            $table->dropIndex(['user_id', 'ip_address']);
+        });
+    },
+];