Do contributions to a 457 or 403b count towards one's modified adjusted gross income (MAGI) limits when trying to determine eligibility to a Roth IRA?

Basically our adjusted gross income (AGI) in 2020 allows us to contribute to a Roth IRA but it would not if I have to add back in the 457 or 403b contributions.  On the surface it appears the 457 and 403b contributions do not need to be added back to our  AGI to determine our MAGI. Just wanted to confirm this is correct?