Ronan Curtis has signed a new three-and-a-half-year Pompey contract.
The deal ensures the Republic of Ireland international forward will remain at Fratton Park until the summer of 2023.
He is the club’s current top scorer with 13 goals this season – and 10 of those strikes have come in his past 16 appearances.
Blues boss Kenny Jackett said: “We’re all delighted that Ronan has signed a new contract and it shows the progress that we’re making.
"We’re all delighted that Ronan has signed a new contract and it shows the progress that we’re making."
“He’s made such a big impression in his first season-and-a-half at Pompey since arriving here from Ireland.”
Curtis joined the Blues from Derry in the summer of 2018, netting 12 times in 49 appearances in his first season on the south coast.
That form was rewarded with a call-up to the senior Ireland squad, with his debut coming in a goalless draw against Northern Ireland.