diff --git a/src/Cashier/Resources/Model.php b/src/Cashier/Resources/Model.php
index 30df148..208ae1c 100644
--- a/src/Cashier/Resources/Model.php
+++ b/src/Cashier/Resources/Model.php
@@ -30,4 +30,6 @@ public function getCurrency(): string;
     public function getCreatedAt(): string;
 
     public function getExternalId(): ?string;
+
+    public function refresh(): void;
 }