Prime Minister John Key is heading across the Tasman later this week for annual talks with his Australian counterpart.
Mr Key will meet with Australian Prime Minister Malcolm Turnbull in Sydney on Friday.
"Our discussions will span a range of topics of mutual interest, including opportunities for further trans-Tasman collaboration on trade, regional and security issues," Mr Key said.
"We will also continue to discuss the situation of New Zealanders living in Australia, and the ongoing management of deportations from Australia."
Asked if he thought some progress could be made on the long-standing issues around the rights of New Zealanders living in Australia, Mr Key said it was too early to say.
"We're ever hopeful that some progress will be made there but let's see how it goes," he told reporters today.
While it's not on the formal agenda, there could also be discussions around former New Zealand Prime Minister Helen Clark's possible bid for the United Nations' top job.
Miss Clark hasn't yet put her name forward, but there's been speculation in recent weeks that former Australian Prime Minister Kevin Rudd could also have a tilt at becoming the next UN secretary-general.
That's led to questions around who the Australian government might throw its weight behind.
"It's not a question of one versus the other, it's just that our support would be firmly behind Helen Clark," Mr Key said.
If Ms Clark does get nominated, Mr Key said he'd be lobbying "every leader that I have a relationship with around the world" to also support her, including Australia.
On the trip to Sydney, Mr Key will be accompanied on the trip by a 30-strong business delegation.
He will also meet with New South Wales Premier Mike Baird.