diff --git a/server/Program.cs b/server/Program.cs
index 4d54f75..efd8346 100644
--- a/server/Program.cs
+++ b/server/Program.cs
@@ -227,7 +227,10 @@ app.MapPatch("/api/orders/{orderId}/status", async (string orderId, UpdateOrderS
     ReturnDocument = ReturnDocument.After
   };
 
-  var order = await orderCollection.FindOneAndUpdateAsync(order => order.Id == orderId, update, options);
+  var order = await orderCollection.FindOneAndUpdateAsync<OrderDocument>(
+    order => order.Id == orderId,
+    update,
+    options);
   return Results.Json(new { order });
 });