Robert Murray of The Athletic reported the update Tuesday morning.
Milwaukee selected Hiura with the ninth overall pick in the 2017 draft. The former UC Irvine Anteaters standout is now in line to make his MLB debut.
The 22-year-old California native was on fire for San Antonio with a .333/.408/.698 triple-slash line to go along with 11 home runs and four stolen bases through 37 games. He ranked fifth in the Pacific Coast League in total bases (90) and sixth in OPS (1.106).
His success comes on the heels of being named the 2018 Arizona Fall League MVP after helping lead the Peoria Javelinas to a championship.
During spring training, Hiura said his main priority was staying healthy to continue his development both offensively and defensively while awaiting the call from the Brew Crew, per Tyler Maun of MiLB.com:
"It'll be cool when the time comes. Right now, I can only control what I can control, give my best effort and attitude to San Antonio. My goal is to do whatever I can to help the team win there, and if [the Brewers] need me, of course I'll be excited for that moment to take it all in, cherish those moments and do what I can to help contribute at that level."
Hiura is likely to take over as the team's starting second baseman. That will allow Mike Moustakas, who has played second for the first time in his career this year, to return to his traditional spot at third base, while Hernan Perez shifts into a super-utility role.
Ken Rosenthal of The Athletic reported third baseman Travis Shaw is "likely" heading to the injured list with a wrist injury to open a spot on the 25-man roster.
The moves should add depth to a Brewers offense that ranks 12th in runs scored and 14th in OPS.