diff --git a/app/MetadataResolver/Metadata.php b/app/MetadataResolver/Metadata.php
index 070dc52..dbe8654 100644
--- a/app/MetadataResolver/Metadata.php
+++ b/app/MetadataResolver/Metadata.php
@@ -2,9 +2,13 @@
 
 namespace App\MetadataResolver;
 
+use Carbon\Carbon;
+
 class Metadata
 {
     public $title = '';
     public $description = '';
     public $image = '';
+    /** @var Carbon|null */
+    public $expires_at = null;
 }