The Rockies recalled Peralta from Triple-A Albuquerque on Friday.
Peralta will give the club a fresh bullpen arm after Chase Dollander's (elbow) injury-shortened start Thursday in Pittsburgh. The southpaw was up with the Rockies for a bit in April but didn't make an appearance. Peralta holds a 3.79 ERA and 14:5 K:BB over 19 innings with Albuquerque.