diff --git a/src/controllers/03-employee-controller.ts b/src/controllers/03-employee-controller.ts
index add8a8f..bb66f58 100644
--- a/src/controllers/03-employee-controller.ts
+++ b/src/controllers/03-employee-controller.ts
@@ -112,7 +112,7 @@ type EmployeeUpdate = {
 
   nrcNo?: string | null;
 
-  dateOfBirth?: Date;
+  dateOfBirth?: Date | null;
   gender?: string;
   nationality?: string;
   otherNationality?: string | null;