How do I update my Direct Deposit information for the stimulus package if I had to pay taxes last year by check and I'm not ready to file this year's taxes yet?

You paid by check and not direct debit?  If you used direct debit they will use that account to make a direct deposit.  

Not sure what will happen if you paid by check.  You can follow this link for the most up to date info.  I'm sure that will eventually be addressed.

CORONAVIRUS TAX CENTER: 2020 STIMULUS