The hosts had named a 13-man squad for Melbourne and Sydney Tests, but the leg-spinning all-rounder has been added as Australia look to avoid a first-ever series loss to India at home.
Skipper Tim Paine confirmed the inclusion in the post-match press conference, interestingly though no one from the current squad has been dropped.
Questions have been raised over Mitchell Marsh and Aaron Finch's form in the series, and one of them is likely to miss out the New Year Test.
24-year-old Labuschagne made his debut against Pakistan in UAE earlier this year. He played both the Tests but was overlooked for Peter Handscomb for the India series.
He averages 33.17 with the bat and has four hundreds to his name in first-class cricket.
australiaaustralia vs india 2018Australia vs India 2018-19India vs Australia 2018India vs Australia 2018-19Marnus Labuschagne
First Published: December 30, 2018, 9:26 AM IST