diff --git a/tests/TestCase.php b/tests/TestCase.php
index 64faf36..cf22d23 100644
--- a/tests/TestCase.php
+++ b/tests/TestCase.php
@@ -20,8 +20,10 @@ public function mock(string $class, array $expects = []): MockClient
         ]);
     }
 
-    public function setUp(): void
+    protected function setUp(): void
     {
+        parent::setUp();
+        
         $this->core = new CoreAPI('api-key');
     }
 }
\ No newline at end of file