The Magpies climbed to fifth in the table after their win against Blackburn at Ewood Park on Wednesday evening.
“We really want to push on for the second half of the season because we are up there and the chance is there,” said Krul.
“We really have to push on. I don’t think we should rest on our laurels, we just have to really crack on now.
“We have got a fantastic squad and if we can prove we are a top-six team at the end of the season, that will attract more players to the club and then we can really push on.”
