Stanlee said:Whenever you do so, OINP must be notified with regard to changes to your personal information or circumstances as detailed on your Nominee Application Form. You must complete the Change of Personal Information Form. This form can be downloaded from the OINP website http://www.ontarioimmigration.ca/en/pnp/OI_PNPFORMS.html. Completed forms should be submitted to OINP by mail, fax or email attachment. Additionally, you will have to update your Express Entry profile as well. You can email the form to ontarionominee@ontario.ca and expressentry@ontario.ca
Thanks @Stanlee for the detailed info.