The Brewers selected Richardson's contract from Triple-A Nashville on Saturday.
Since signing a minor-league deal with Milwaukee in June, Richardson has turned in a 4.20 ERA and 1.50 WHIP across 30 innings with Nashville. Although his Triple-A numbers weren't anything special, the Brewers will add him to their bullpen to give them another fresh arm to work with. Bryse Wilson was designated for assignment in a corresponding move.