To update your account's email address to a new one, you must first log in to your account using your existing email address. Once logged in, go to your Profile (by clicking on your name at the top-right corner) > Edit Profile.

In the Edit Profile section, you will be able to see your account details such as your first name, last name, and email address.

In the email address field, insert your new email address and click 'Save' to apply the changes. Once the email address is updated, a confirmation email will be sent to the new email address. Click on the link provided in the email to complete the process and successfully update your email.