YES Bank will be upgrading its systems "to provide you superior banking experience," the bank told its customers in an e-mail notification.

According to the email, the system upgradation is likely to take four days and the bank notified its customers that during the time of its systems upgrade, its Internet banking services will be unavailable.

YES Bank said, "All our transaction channels including NetBanking, Mobile Bank, Electronic Payments (NEFT/ RTGS/ IMPS), SMS Banking, USSD Banking will not be functional from Friday, February 10, 2017, 6 pm to Monday February 13th, 2017, 9 am.

"We request your co-operation and regret any inconvenience caused," YES Bank said in the e-mail notification.

On the BSE, YES Bank's shares were trading at Rs 1,395.50 apiece, down Rs 1.75 or 0.13% from previous day's close.