The first five-and-a-half of the eight episodes filmed for the first season were shot prior to Welch's death.
Welch died Dec. 2 of lung cancer. He was 48.
Mike Judge, creator of "Silicon Valley," said he and exec producer Alec Berg rewrote scenes of the show, but not enough to change the story.
“[Welch] was incredible and we loved writing for him,” Berg told TheWrap.