Uncapped fast bowler Jackson Bird has replaced injured seamer Ben Hilfenhaus in Australia's squad for the second Test against Sri Lanka.
Batsman Usman Khawaja, too, has been named in the 13-man collective. Khawaja's call-up is, ostensibly, as cover or captain Michael Clarke, who is nursing a hamstring injury.
Hilfenhaus sustained a side injury during the series opener, subsequently joining fellow right-armers Josh Hazlewood (foot), Pat Cummins (back) and James Pattinson (rib) on the sidelines.
The 26-year-old Bird has enjoyed a slew of first-class wickets this season, including a career-best haul of six for 25 against Western Australia last month. His fine form has stood him in good stead for the Melbourne Stars in the Big Bash League too.
"Jackson's outstanding first-class figures of 87 wickets at 19.72 from 17 matches have been rewarded with his inclusion in the squad. He is a tall athletic opening bowler who bowls a consistent line and length and keeps running in all day," said national selector John Inverarity.
"Usman turns 26 today, just one week younger than Jackson, and he has been in good form this season. He has played especially well on occasions when conditions for batting have been very difficult.
"If Michael is not able to take his place in the side then Shane Watson will captain the team. Shane acquitted himself well when he deputised for Michael in the ODI series in the Caribbean earlier this year."
The second Test gets underway in Melbourne on 26 December. Sydney will host the third and final fixture.