Showtime viewers will bear witness to frantic nature of Carrie Matheson and the stoicism of Dr. William Masters for at least 12 more episodes next summer.

The network announced today that Homeland Season 4 and Masters of Sex Season 2 have both been picked up and will air in the middle of 2014.

“Homeland continues to prove its strength for Showtime, and is one of television’s most exciting, provocative and widely-discussed shows,” said network president David Nevins in a statement. ”The critical and audience reaction to Masters of Sex since its great launch has been incredibly gratifying.”

Homeland Season 3, while under critical fire for its latest episode, is averaging 6.5 million weekly viewers across all platforms through four weeks; while Masters of Sex is bringing about 5.4 million.

Both air new episodes this Sunday.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.