Pakistan's Faheem Ashraf and Hasan Ali have been ruled out of the first Test against Australia due to injuries.
Iftikhar Ahmed and Mohammad Wasim Jnr have been added to the squad as their replacements for the series opener, which is slated to be played from March 4-8 at the Rawalpindi Cricket Stadium.
Both players will start their three-day hotel quarantine from Monday, February 28, before joining the rest of the squad should they clear the COVID test.
Faheem and Hasan Ali are expected to regain full fitness before the second Test (12-16 March) and return to the squad after completing mandatory isolation.
Updated Test squad: Babar Azam, Mohammad Rizwan, Abdullah Shafique, Azhar Ali, Fawad Alam, Haris Rauf, Iftikhar Ahmed, Imam-ul-Haq, Mohammad Wasim Jnr, Nauman Ali, Sajid Khan, Saud Shakeel, Shaheen Shah Afridi, Shan Masood and Zahid Mahmood.