diff --git a/src/ProcessWebhookJob.php b/src/ProcessWebhookJob.php
index e5ea851..11b5383 100644
--- a/src/ProcessWebhookJob.php
+++ b/src/ProcessWebhookJob.php
@@ -13,7 +13,7 @@ abstract class ProcessWebhookJob implements ShouldQueue
 {
     use Dispatchable, InteractsWithQueue, Queueable, SerializesModels;
 
-    public WebhookCall $webhookCall;
+    public $webhookCall;
 
     public function __construct(WebhookCall $webhookCall)
     {