The announcement came shortly after the season 2 finale.
American missionary Renee Bach is accused of contributing to the deaths of African children.
“Although goodbyes are never easy, I’ve decided that now’s the time to move on,” Gumbel said.
The five-episode series premiered on June 4, with the final episode airing in July.
The comedy made history with its three Emmy wins.
Warner Bros. is exploring a potential deal that would allow its original series to stream on Netflix.
‘Winning Time: The Rise of the Lakers Dynasty’ returns in August.
“You almost gotta make it your business to not let that sh-t get to you,” the rapper said on ‘The Shop.’
The HBO film is co-directed by Summer’s daughter.
The HBO sketch comedy series is adding three new featured players.