diff --git a/modules/batch_users/batch_users.py b/modules/batch_users/batch_users.py
index 6e94e0c..55ee6f3 100644
--- a/modules/batch_users/batch_users.py
+++ b/modules/batch_users/batch_users.py
@@ -21,7 +21,7 @@ class UserDTO(BaseModel):
     passwordSalt: str
     groupName: Optional[str] = None
     corporate: Optional[str] = None
-    studentID: Optional[str] = None
+    studentID: Optional[str | int] = None
     expiryDate: Optional[str] = None
     demographicInformation: Optional[DemographicInfo] = None
 
diff --git a/modules/batch_users/service.py b/modules/batch_users/service.py
index bd6be73..60861ba 100644
--- a/modules/batch_users/service.py
+++ b/modules/batch_users/service.py
@@ -55,7 +55,11 @@ class BatchUsers:
 
     @staticmethod
     def _map_to_batch(request_data: Dict) -> BatchUsersDTO:
-        users: list[UserDTO] = [UserDTO(**user) for user in request_data["users"]]
+        users_list = [{**user} for user in request_data["users"]]
+        for user in users_list:
+            user["studentID"] = str(user["studentID"])
+
+        users: list[UserDTO] = [UserDTO(**user) for user in users_list]
         return BatchUsersDTO(makerID=request_data["makerID"], users=users)
 
     @staticmethod