diff --git a/src/Contracts/QueueWorker.php b/src/Contracts/QueueWorker.php
index e3f4c398..3bdcb899 100644
--- a/src/Contracts/QueueWorker.php
+++ b/src/Contracts/QueueWorker.php
@@ -6,7 +6,7 @@
 
 interface QueueWorker
 {
-    public function up(QueueConfig $config): void;
+    public function up(string|QueueConfig $config): void;
 
     public function down(string $alias): void;
 }
diff --git a/src/Fakes/QueueWorkerFake.php b/src/Fakes/QueueWorkerFake.php
index f56f3961..6f93c5e0 100644
--- a/src/Fakes/QueueWorkerFake.php
+++ b/src/Fakes/QueueWorkerFake.php
@@ -19,7 +19,7 @@ class QueueWorkerFake implements QueueWorkerContract
      */
     public array $downs = [];
 
-    public function up(QueueConfig $config): void
+    public function up(string|QueueConfig $config): void
     {
         $this->ups[] = $config;
     }