Spinner Jon Holland and potential debutant Jhye Richardson have been included in Australia's 15-man squad for the upcoming tour of South Africa.
Selectors retained the side that sealed a 4-0 Ashes win over England in Sydney earlier this month, while adding Holland and Richardson to the touring party for the four-Test series, starting in Durban on March 1.
Victorian left-armer Holland only has two Test appearances to his name, having not played since August 2016 and he is expected to provide backup for leading spinner Nathan Lyon.
The 30-year-old has taken 11 wickets in two Sheffield Shield matches this season, having claimed 50 last term.
"Jon was the second leading wicket-taker in the Sheffield Shield last season and has performed well in the games he has played for Victoria this season," national selector Trevor Hohns said.
"We envisage the wickets we will see in South Africa will not warrant the need to play two spinners. Therefore, should Nathan not be able to play at any stage, we wanted to have the best specialist spinner available to us and based on current red-ball form Jon warrants that spot."
Uncapped paceman Richardson will travel to South Africa along with Mitchell Starc, Josh Hazlewood and Pat Cummins.
The 21-year-old made his one-day international debut against England at the Gabba last week, finishing with figures of 2-57.
"Jhye is a talented right-armer that bowls with very good pace through the air. He impressed in his first one-day international and has bowled well in the Sheffield Shield this season. He is an exciting young prospect who will benefit immensely from his time with this squad," Hohns added.
Meanwhile, David Warner will captain Australia in their Twenty20 international tri-series against New Zealand and England, starting at the SCG on February 3.
Warner will remain in Australia while his Test team-mates fly out to South Africa on February 15, with regular skipper Steve Smith rested for the T20 series.
Hobart Hurricanes star D'Arcy Short is set to make his T20 bow, while big-hitting batsman Glenn Maxwell – overlooked for the Tests and ODIs against England – is in the squad.
"Steve has had a very big summer and will benefit from a short break both physically and mentally, before he leaves for South Africa," Hohns said.
"David is a very capable leader and has captained in Steve's absence before and done a fine job. We wanted to ensure the T20 side had key leadership throughout this series and we know the team is in good hands with him at the helm."
Australia Test squad: Steve Smith (c), David Warner, Cameron Bancroft, Usman Khawaja, Peter Handscomb, Shaun Marsh, Mitchell Marsh, Tim Paine, Mitchell Starc, Josh Hazlewood, Pat Cummins, Nathan Lyon, Jackson Bird, Jon Holland, Jhye Richardson.
T20 squad: David Warner (c), Aaron Finch, Ashton Agar, Alex Carey, Ben Swarshuis, Travis Head, Chris Lynn, Glenn Maxwell, Kane Richardson, D'Arcy Short, Billy Stanlake, Marcus Stoinis, Andrew Tye, Adam Zampa.
|´Don´t cry, you did really well´ - Serena consoles Yastremska|
|Andrade eyes Golovkin after defending middleweight title|
|WATCH: Cousins throws down thunderous dunk to open Warriors career|
|Serena sails into Australian Open last 16|
|Icardi will renew Inter contract - Nara|
|Mickelson maintains Desert Classic lead|
|Klopp dismisses Coutinho rumours|
|Osaka completes stunning comeback in Melbourne|
|Lakers guard Rondo cleared for full-contact practices|
|Solskjaer: Lukaku is big part of Man United squad|
|Napoli slam FIGC decision to reject Koulibaly appeal|
|We´re the hunters! - Kovac´s Bayern ready to chase down Dortmund|
|Chiefs safety Reid expected to play against Patriots|
|Chelsea not ready to rest Jorginho - Sarri|
|NFL receiver Fitzgerald has hole-in-one in round of golf with former president Obama|
|I´m really loving playing this game - Eagles QB Foles not ready to retire|
|Saints show no mercy, score 111 in rout of Timisoara Saracens|
|CAF Champions League Review: Khenissi double gets ES Tunis up and running|
|Edinburgh clinch home quarter-final, Glasgow also advance to last eight|
|Hazlewood to miss Sri Lanka Tests with back injury|
|Norwich City 3 Birmingham City 1: Canaries end winless run to go second|
|Hoffenheim 1 Bayern Munich 3: Goretzka goals close gap on Bundesliga´s return|
|Cowboys part ways with offensive coordinator Linehan|
|Payton´s message to Saints fans: Hurry up and make noise|
|Transfer talk no distraction for Inter, says Spalletti|
|Memories of 2015 still linger for Vunipola as England begin World Cup year|
|De Bruin´s 85th-minute try consigns Kings to eighth straight loss|
|Bielsa´s Derby County dossier detail ´pretty standard´ – OptaPro chief|
|Injury-hit Madrid lose Navas to adductor issue|
|Patriots coach Belichick still gets nervous ´every week´|
|Copa del Rey draw: Barcelona to meet Sevilla in quarter-finals|
|Kohli: No one more committed to India than Dhoni|
|Brook questions Khan credibility following Crawford agreement|
|Sad Pochettino admits Bielsa is ´wrong´|
|Simeone eyes LaLiga gain after Atletico´s Copa del Rey pain|
|Rossi a no-go for Tottenham as Pochettino rules out panic buys|
|Guardiola identifies ´three or four´ midfield targets|
|Nadal encourages patience in young stars after humbling De Minaur|
|NFL playoffs 2019: 10 Opta facts for Patriots v Chiefs|
|Robertson helping Klopp learn Scottish for Dalglish chats|
|Levante appeal over alleged ineligible Barcelona player rejected|
|NFL Playoffs 2019: 10 Opta facts for Rams v Saints|
|Lowry to take three-shot Abu Dhabi lead into final round|
|Training is not for anyone else - Klopp condemns Bielsa over ´spygate´ row|
|In other countries, everybody does it - Guardiola respect remains for spying Bielsa|
|Cilic battles back to join Nadal, Federer in fourth round|
|Klopp: Trent unbelievable for playing through pain|
|Faulkner provides super start and fabulous finish to sink Scorchers|
|Ref admits error in key foul call on Lonzo Ball in Lakers-Thunder game|
|Marina Granovskaia is working very hard – Sarri ´confident´ of January signings|
|Tuchel confirms Rabiot out of PSG contention|
|Madrid derby kick-off confirmed for February 9|
|Benzema fit to face Sevilla despite broken finger, Solari confirms|
|Bournemouth boss Howe says no offers received for Wilson|
|Kerber cruises after Wozniacki, Sabalenka upsets|
|Mbappe a great player and great person, says beaming Beckham|
|Gracia confident someone will step up if Doucoure leaves for PSG|
|Albrighton signs new Leicester deal|
|Niasse joins Cardiff on loan from Everton|
|Hendrick credited with Fulham strike|
|Western Sydney Wanderers 1 Adelaide United 2: Goodwin compounds Wanderers woes|
|Chahal and Dhoni carry India to ODI triumph|
|Levante report Barcelona for alleged use of ineligible player in Copa del Rey|
|Solskjaer regrets Sanchez´s Reading setback|
|Tomic brands Hewitt a ´liar´ as feud continues|
|Ruthless Nadal thrashes teenager De Minaur|
|Wozniacki enjoyed status as defending champion in Melbourne|
|Solskjaer backs Mourinho to return to football´s big time|
|Murray to miss Open 13 Marseille|
|Solskjaer´s United turnaround no easy task, says Hughton|