If you have not filed already, there is a workaround for changing your bank account number if an old one transferred over from last year. Please see below for the steps you need to take to update your account number. You will need to be under the File section once logged into your return.
NOTE: If you have already filed the return, there is no way to change the bank account number. The check will be mailed to the address on the return, if it can't be successfully deposited into the account.
https://ttlc.intuit.com/replies/5619072