Victory over MK Dons allowed Pompey to shake off the inconsistency tag.
But now Kenny Jackett wants to ensure that complacency does not set in ahead of Tuesday’s trek to Doncaster.
Last weekend’s triumph at Fratton Park made it successive league wins for the first time this season.
And Jackett knows they have to keep improving in order to stay in touch with those sides in the top six.
The Blues boss said: “We’ve had some reasonable results lately, with a couple of wins on the bounce and we want that to continue.
“We’ll take the confidence, without being complacent because you have to earn everything you get and work hard.
"We’re still in there and we’re showing promise, but there’s work to do if we want to keep pace with other sides."
“This is a good division and if we can’t be at the top, we want to stay in touch with it. That has to be our aim.
“We’re still in there and we’re showing promise, but there’s work to do if we want to keep pace with other sides.”
Pompey pipped Doncaster to the fourth tier title last term, although Rovers came out on top in both meetings between the sides.
Jackett said: “They beat us twice last season and the clubs will obviously know a lot about each other having competed in League Two.
“Both were successful and won promotion, so we’re looking forward to the game, although there have been changes to both squads.
“It’s always a difficult place to go and Darren Ferguson has an outstanding record as their manager.
“But we’ll look to maintain our standards if possible and even raise the bar to become more efficient and better as a team.”
Brett Pitman is still sidelined following his knee operation, but Jackett should have one extra striking option.
He said: “Conor Chaplin will be okay and I would expect him to be a substitute, but Drew Talbot sustained a groin injury on Sunday morning.”