Payamps was added to the 26-man roster Thursday, Keegan Matheson of MLB.com reports.
The 26-year-old was optioned to Triple-A Buffalo over the weekend, but Payamps was brought back up after the Jays placed a number of pitchers on the IL to begin the season. He'll likely fill a low-leverage role in the bullpen after posting a 6:3 K:BB over 5.1 scoreless innings this spring.