diff --git a/Sharely/share_file.py b/Sharely/share_file.py
index 5919eed..db10270 100644
--- a/Sharely/share_file.py
+++ b/Sharely/share_file.py
@@ -79,6 +79,7 @@ def callback(request_id, response, exception):
         batch.add(service.permissions().create(fileId=file_id,
                                                emailMessage=email_message,
                                                body=user_permission,
+                                               expirationTime=f"{expire_date_utc8.strftime('%Y-%m-%d')}T23:59:59+08:00:00",
                                                fields='id',))
 
         batch.execute()