Having won the Liberal leadership on Friday, Mr Morrison's 23-member cabinet includes six women - up from five under Malcolm Turnbull - but 76 per cent of his full ministry is male.

"This new Liberal-National team is a next-generation team," Mr Morrison told reporters on Sunday, noting that it would also bring "healing" after a divisive week in which Mr Turnbull was dumped.

New Treasurer Josh Frydenberg's former role as both environment and energy minister has been split between Rhodes scholar Angus Taylor (Energy) and WA lawyer Melissa Price (Environment).

It will enable Mr Taylor to come up with a policy to cut power prices and provide reliable electricity, while Ms Price focuses on emissions and issues such as the Great Barrier Reef.

Despite his role in the destabilisation of Mr Turnbull last week, Peter Dutton remains Home Affairs Minister but loses his immigration role to Sydney MP David Coleman.

"We need a strong focus on our immigration program so it brings the skills and the harmony and the unity that we want from the program," Mr Morrison said of the change.

"The minister for home affairs will focus on everything from cyber security to law enforcement to border protection, security agencies, and will focus more principally on security tasks."

Victorian MP Alan Tudge will take on population and infrastructure, which Mr Morrison said was "one of the larger challenges that I know is burning in the minds and conversations of Australians."

"Alan Tudge is the minister for congestion busting."

With Julie Bishop going to the backbench and expected to retire from parliament at the next election, former Defence Minister Marise Payne takes on Foreign Affairs.

Christopher Pyne moves across to Defence, formerly held by Senator Payne, and former Trade Minister Steve Ciobo will replace him as Defence Industry Minister.

Dan Tehan has been moved into the troubled education portfolio while his predecessor Simon Birmingham moves to trade and tourism.

Mitch Fifield, who quit the cabinet last week, returns to communications, while Greg Hunt retains health.

Mathias Cormann has been returned as finance minister and Senate leader.

Former Small Business Minister Craig Laundy and Local Government Minister John McVeigh have also stood down from the front bench.

Mr Morrison has brought back the old portfolio of Industrial Relations, handing it to Kelly O'Dwyer who will oversee the coalition's attacks on union misconduct while also taking a fresh look at productivity gains from workplace reform.

Neither former prime minister Tony Abbott nor former Nationals leader Barnaby Joyce were returned to the ministry.

But Mr Joyce was made special envoy for drought assistance and drought recovery, ahead of Mr Morrison visiting drought-hit western Queensland on Monday.

Brisbane-based former frontbencher Jane Prentice will retire at the next election.

Australian Associated Press