fnd_user_pkg.updateuser API resets User password

Employees are updating their Emails through Selfservice and the value gets updated in People Screen, and since reset password functionality uses emails in Users Screen which is not affected by the Changes happening in People Screen and Self services thus we needed to update the User Record Programmaticlly, by using the update API ( fnd_user_pkg.updateuser) the issue is the API take password as inputs and reset the user password ( i cant pass null as it is required). so is there a way of doing this without changing Users password