Showtime is gearing up for the sixth season of Dexter, reports The Hollywood Reporter.

Dexter just had its second highest ratings ever on Sunday night, delivering 2.5 million viewers, up 43% from the fifth season premiere.

RELATED: Dexter Ending Explained by Star Michael C. Hall

The upcoming finale on Dec. 12 will most likely set a new viewership record.

In 2008, Showtime confidently renewed Dexter for two seasons, but this time key talent deals will need to be renegotiated before the show's seventh season, so expect the official Dexter renewal for season six within the next week or so.