Vikings will return this February with a 20-episode fourth season, after Shaw Media ordered an additional four episodes of the Canada/Ireland coproduction.

Created by Michael Hirst and produced by World 2000 Entertainment and Take 5 Productions, the first 10 episodes of the new season will air once a week on Thursdays at 10 p.m., starting from Feb. 18. The remaining half of the season will air at an unspecified date later in 2016.

The new episodes will be accompanied by an expanded four-part documentary series called Real Vikings, as well as an immersive interactive experience entitled Viking: A World Revealed, and Vikings: Behind the Shield Wall with ET Canada. The hour-long doc episodes explore recent discoveries relating to Viking civilization, as well as insight from experts and interviews with the cast, while the digital component is an interactive behind-the-scenes look at the making of the fourth season.

Currently, production on 16 of the 20 new episodes has been completed, with the production teams on a break until January, when they will complete the final four episodes. The fourth season was greenlit in March 2015 after the show drew an average audience of 850,300 (AMA A2+ Numeris data provided by Shaw Media) viewers to History during its season-three run.

The additional episode-order made sense both creatively and strategically, John Weber, president and CEO of Take 5 told Playback Daily. Hirst, he said, felt the the initial plan of splitting the season into the two eight-part blocks didn’t fit as well with the story arc, and the story would work better if split into two 10-episode blocks.

In total, the 20-part season will take approximately 200 shooting days to complete, said Weber, and he expects post-production (handled by Mr. X in Toronto) on season four to be complete around mid-2016. Vikings is primarily shot in Ireland but expanded to Canada for the first time this year with a stint in Sault Ste. Marie.

Executive producing the show alongside Weber and Hirst is World 2000’s Morgan O’Sullivan, Take 5’s Sheila Hockin, as well as Sherry Marsh, Alan Gasmer and James Flynn. Joining the cast this season is Dianne Doan (Descendants), Peter Franzén (The Gunman) and Jasper Pääkkönen (Jet Trash), alongside existing cast members Travis Fimmel, Linus Roache, Katheryn Winnick, Moe Dunford and Alyssa Sutherland.