What address to use for old filings?

When filing a form 1040 for past years (I'm filing them late), what address should you write down at the top where it asks for your "home address"? 

 

For instance, if I'm filing a past-due tax return for 2017, should I be using the home address that I used to live in 2017? or should I be using my current home address (which is different from 2017)?

 

Thank you.