HBO chief Casey Bloys says the long-awaited follow-up to the series will start filming in October.

Tell your god to ready for…more Deadwood.

Twelve years after the series ended its three-season run, HBO has green lighted a movie that will continue the story of the lawless western outpost. HBO chief Casey Bloys made the announcement Wednesday at his TCA session.

Production on the film is set to begin in October, Bloys said, and he's hoping for a premiere in spring 2019 on HBO. Deadwood creator David Milch is writing it, and Daniel Minahan, who helmed four episodes of the series, is attached to direct.

The production is in the process of lining up schedules for castmembers. Bloys demurred when asked for details, saying, "Let's take the green light and celebrate that."

Deadwood ran for three seasons on HBO from 2004 2006, earning eight Emmy wins and a devoted audience. The show ended on what was, to many viewers, an inconclusive note, and talk of — take your pick — a shortened fourth season, miniseries or movies has come up periodically practically since the moment the show ended.

Stories have shifted over the years as to why Deadwood ended after season three; at the time, Milch said he and HBO weren't able to work out a deal for a fourth season, partly because he didn't want to shorten the episode order.

In a 2012 interview, however, Milch said he "absolutely knew" he was writing a series finale with the last episode of season three.

The project has picked up more momentum in the past year. At TCA in July 2017, Bloys told reporters he had read a script from Milch. Then in January, Bloys said he was "optimistic" that production could begin in the fall.

The Deadwood cast was headed by Ian McShane, Timothy Olyphant, Molly Parker, Kim Dickens, John Hawkes, Robin Weigert, W. Earl Brown, Dayton Callie, Paula Malcomson and Brad Dourif. Jim Beaver, whose character was killed in season three, and the late Powers Boothe were also regulars.