When does Comedy Underground with Dave Attell return?

Comedy Underground with Dave Attell is a stand-up comedy series on Comedy Central. The series has featured fellow comics Jeff Ross, Amy Schumer, Jermaine Fowler, Ari Shaffir, Judah Friedlander, Brad Williams, Jay Oakerson, Nikki Glaser, Kurt Metzger, Ali Wong, Junior Stopka, Luenell, Russ Meneve, April Macie, Ralphie May, Jimmy Shubert, Tom Rhodes, Triumph the Insult Comic Dog, and Artie Lange.