Martinez was recalled from Triple-A Sugar Land on Tuesday, Brian McTaggart of MLB.com reports.
Martinez was unable to crack Houston's Opening Day roster but will now join the big club a few weeks into the season. He made his MLB debut with three appearances last year and had a strong campaign at Sugar Land with a 2.81 ERA, 0.94 WHIP and 78:20 K:BB over 57.2 innings.