The Black Caps bowler Adam Milne has been ruled out of the remainder of the team's European tour with an achilles injury.
Milne felt pain in his left achilles tendon during the team's first net session in Ireland and a scan this week revealed he would need some rest and rehabilitation.
The recovery timeline for the injury means the newly contracted Wellington Firebird will likely only be available for the final two matches of the Tour against the Netherlands.
With extra bowling cover needed in the squad for the remainder of the tour, the selectors felt Jacob Duffy was deserving of selection and that he had been impressive in his time away with the Test and ODI squads in England and Ireland respectively.
Coach Shane Jurgensen said the whole squad was feeling for Milne.
"We're naturally disappointed for Adam. He's a great character in any team and I am sure he'll apply his strong will to this next phase of rehabilitation," he said.
"There is still a lot of cricket to come this year including the ICC T20 World Cup in Australia, and Adam is determined to make himself available to be part of that selection picture.
"We're backing Jacob to step up. He's made an exciting start to his white ball international career."
"He's an established performer in our Super Smash and showed on T20I debut against Pakistan that he can transfer those skills to international cricket."
The team have one more ODI remaining against Ireland on Friday at Malahide before the T20 squad travel to Belfast on Saturday ahead of the first T20I on Monday.
Adam Milne will leave Ireland on Saturday to start his rehabilitation programme.
T20 squad members Mark Chapman, Daryl Mitchell, Michael Rippon and Ben Sears joined the team in Dublin yesterday ahead of the series.
Jimmy Neesham will be the final player to join the squad after playing for Northamptonshire in the current round of the County Championship.
Updated Squad for Ireland (3 x T20Is), Scotland (2 x T20Is 1 x ODI) and the Netherlands (2 x T20I)
Mitchell Santner (c)
Finn Allen
Michael Bracewell
Mark Chapman
Dane Cleaver (wk)
Jacob Duffy
Lockie Ferguson
Martin Guptill
Daryl Mitchell
Jimmy Neesham
Glenn Phillips
Michael Rippon
Ben Sears
Ish Sodhi
Blair Tickner