diff --git a/api/tests/test_tasks.py b/api/tests/test_tasks.py
index e3bcdd4..b548e28 100644
--- a/api/tests/test_tasks.py
+++ b/api/tests/test_tasks.py
@@ -8,7 +8,7 @@ def test_create_task(test_client, test_user):
 
     response = test_client.post(
         "/tasks",
-        data=json.dumps({"title": "Test Task", "description": "Opis", "due_date": "20-03-2025 12:00", "done": 0}),
+        data=json.dumps({"title": "Test Task", "description": "Opis", "due_date": "2025-03-20T12:00", "done": 0}),
         headers=headers,
         content_type="application/json",
     )