Prime Minister Malcolm Turnbull has unveiled what he's called the "dynamic" new ministerial team he expects to take into this year's election.
"It's a team that's focused on Australia's future, focused on the policies that will encourage innovation and enterprise, secure our prosperity as a 21st century economy with a strong social welfare safety net and ensure we remain the nation we want to be," Mr Turnbull said on Saturday.
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Mal Brough resigns from ministry
The reshuffle five months after he became prime minister was brought on by the retirement announcements of Deputy Prime Minister Warren Truss and Trade Minister Andrew Robb, as well as the forced resignations of junior ministers Stuart Robert on Friday and Jamie Briggs after Christmas.
Mal Brough, who had stood down as special minister of state, told the prime minister on Saturday that he would resign from the front bench because the AFP investigation into copying of former Speaker Peter Slipper's diaries would take much longer than expected.
Overall, the government's most senior team remains stable, while there have been changes at the junior ministerial level.
Cabinet has been expanded by one to 22, with the new-look Nationals team getting an extra seat at the table.
New deputy Nationals leader Fiona Nash becomes the sixth woman in cabinet, while Steve Ciobo takes over trade and Victorian Nationals' Darren Chester assumes the infrastructure and transport portfolio.
Mr Robb has been appointed special envoy for trade to help with a smooth transition of the key policy area.
"I'm appointing Andrew Robb as a special envoy for trade between now and the election so that he can support Steven in the transition into the new portfolio and ensure that Andrew's remarkable range of international contacts will be introduced to his successor," Mr Turnbull said.
Senator Nash takes on new regional-focused responsibilities including regional development, regional communications and rural health. Incoming Deputy Prime Minister Barnaby Joyce has retained the agriculture and water portfolios.
Mr Joyce was happy with the portfolio focus the Nationals have secured, including the appointment of Rockhampton senator Matt Canavan as Northern Australia minister to work with cabinet minister Josh Frydenberg.
"The ministerial team we have unveiled today, coming from both the north and the south of our nation, and representing every National Party state and the Northern Territory, will ensure that the interests of all regional areas will be taken into account in government decision-making," he said in a statement.
While the Nationals have ensured there's a keen focus on rural and regional Australia, the Cities and Built Environment ministry that Mr Turnbull touted "critical" back in September has all but disappeared.
Mr Briggs held the portfolio until he was forced out in December.
At that time, Mr Turnbull announced that Environment Minister Greg Hunt would act as the minister for cities and built environment.
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In the latest move, Angus Taylor has been appointed assistant minister to the prime minister for cities.
Mr Turnbull has given several back benchers the chance to prove themselves with new roles as assistant ministers, including Jane Prentice, Craig Laundy and Keith Pitt.
"The hardest part of this reshuffle is recognising that there are so many others in our party room who have got the capability, the talent, the passion for hard work, the passion for Australia to qualify them to do these jobs in the ministry," Mr Turnbull said.
Nationals' Luke Hartsuyker was the only unannounced departure from the front bench.
The new ministerial line up will be sworn in by Governor-General Peter Cosgrove in Canberra on Thursday.
