Bishnoi posted selfies showing him wearing his Gujarat Cricket Association (GCA) training kit.
A new beginning, Bishnoi captioned the photo.
The young spinner played his first ODI against South Africa before the T20 World Cup last year.
He was also on the Indian team for the 2022 Asia Cup, but was not selected for the T20 World Cup.
The 22-year-old Jodhpur-born spinner has played 10 T20Is and one ODI for India so far, and has taken 16 wickets for the Lucknow Super Jaints in the Indian Premier League. He has taken 16 wickets in the 10 T20 internationals he has played in so far, with a best bowling score of 4/16.
Bishnoi played one first-class match for Rajasthan last season and also represented the state in several List-A and T20 tournaments.