The Mets have added another optionable, interesting arm to their bullpen mix.

David Stearns’ front office has signed former Astros reliever Andre Scrubb to a minor league deal, a source confirmed Saturday.

Scrubb, a 28-year-old righty, was excellent with Houston in his debut season of 2020, when he led his bullpen in innings (23 ²/₃) with a 1.90 ERA.

He last pitched in the majors in 2021, when injuries began.

A shoulder strain limited him to 19 ²/₃ innings in ’21, and he missed the majority of ’22 due to injury.

The 6-foot-4, 270-pound Scrubb has bounced around since and has pitched well in the Puerto Rico Winter League, holding a 1.35 ERA in 13 innings.

Scrubb, who has two more minor league options remaining, will join a group of bullpen hopefuls for a team that will need emergencies.

Edwin Diaz and Brooks Raley are the only certainties for the Mets’ pen, which will need to be rebuilt.

Stearns has brought in several more possibilities with major league experience — including Austin Adams, Kyle Crick and Cole Sulser.

It is not yet clear if Scrubb will receive an invite to major league spring training. MLB.com first reported the signing.