UPDATED: Four weeks into its freshman run, Spike TV’s unscripted series Ink Master has been renewed for a second season with a 13-episode order. Hosted by rock veteran and tattoo aficionado Dave Navarro and judged by tattoo artists Chris Nunez and Oliver Peck, Ink Master debuted on Jan. 17 and through its first four episodes has averaged 1.4 million viewers for its premiere Tuesday airing and 5.2 million cume viewers a week. The show, part of Spike TV’s effort to broaden its audience by bringing in older males, has improved the Tuesday 10 PM slot by 102% in Men 18-49. The series, produced by Original Media, features 10 tattoo artists competing for a $100,000 cash prize, an editorial feature in the tattoo magazine Inked, and the title of ‘Ink Master.’

Also today, TV Guide Network renewed its own hit reality series Nail Files, for an eight-episode second season to air this summer. The series, from exec producer SallyAnn Salsano, launched in June to TV Guide’s best ever premiere ratings for an original series. It follows the personal and professional life of nail salon owner Katie Czorla.