The Magpies' Sky Bet League Two safety is now confirmed but the campaign is far from over according to the boss.
Nolan said: "A lot of our lads have got a lot to play for - whether that be contracts here or somewhere else.
"Whoever is lucky enough to wear the shirt at Luton, they've got to make sure they're on it - because it could be the last time.
"We've got to go there and give a good account of ourselves. I'll be very, very disappointed if the professionalism, attitude and application drops this weekend.
"I want to finish this season on a high and keep this momentum going."
Captain Michael O'Connor was stretchered off against Portsmouth on Easter Monday and Nolan has yet to learn the extent of the midfielder's injury.
He said: "O'Connor's not going to be available this weekend - we're still getting scans and seeing doctors.
"We're quite certain we'll have Shola back ready for selection and there are just a few niggles here and there - but I'm sure come Saturday we'll have a clean bill of health."