The gay love story is now being workshopped in London.

A stage adaptation of Brokeback Mountain is being produced in London, Attitude reports.

The play is based on Annie Proulx’s 1997 short story of the same name, which follows a secret 20-year love affair between two gay cowboys, Ennis del Mar and Jack Twist. The short story was adapted into an Oscar-winning 2005 film starring Jake Gyllenhaal and Heath Ledger.

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The play’s official Twitter account has posted a photo of the script, indicating that the production is officially underway.

“This week we are very excited to be in the workshop room with actors and creatives who are collaborating to bring to life the first ever stage play of Annie Proulx’s iconic Brokeback Mountain,” says executive producer Tom O’Connell, who has worked on LGBT-themed productions such as Beautiful Thing, Another Country, and The Boys in the Band.

Today is workshop 'DAY ONE' for #BrokebackMountain #WestEnd #Stage with our workshop cast and creatives…RT if you're as excited as we are! pic.twitter.com/59H35MW0GU — Brokeback Mountain (@brokebackplay) July 31, 2017

“I am thrilled that the team we have for Brokeback will create something visually stunning and deeply moving, transforming audiences into the world of Jack and Ennis.”

O’Connell also says that Proulx is “very happy” with the production’s progress.

The stage adaptation was first announced in 2015 after O’Connell acquired the stage rights.

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“I am honored to bring Annie Proulx’s beloved story to the stage as a new play that celebrates her compelling writing and will bring a new perspective on this heart-warming tale of an unbreakable bond,” he said in a previous statement.

“The struggles that the characters of Brokeback Mountain go through are still present in the world today, making the piece as relevant as ever.”

After a successful 2014 run in Madrid, an operatic adaptation of Brokeback Mountain, featuring a libretto by Proulx, will make its U.S. premiere in 2018 at Lincoln Center.