Could we see Renton, Sick Boy and Begbie back up on the big screen? Irvine Welsh thinks so.
Speaking to Ewen Cameron at Edinburgh's Royal Lyceum Theatre, Welsh revealed that the creative team team behind the original 1996 classic are finally ready to make a sequel.
He said: "Myself, Danny and John Hodge. We are all really keen for it to happen, but only in the right circumstances.
"The circumstance has always been that nobody needs the money, so there's no point in doing in for that reason."
Despite penning a number of hit books which have spawned successful film adaptations, Trainspotting remains Welsh's signature work to many fans.
The novel was the Scots writer's debut in 1993 and quickly drew a cult following with its hard-hitting story about the lives of a group of heroin users in 1980s Edinburgh.
Despite a complex non-linear narrative, the book was adapted into a film by director Danny Boyle and screenwriter John Hodge in 1996.
The movie was instantly hailed a British classic, catapulting Ewan McGregor and Robert Carlye into the international spotlight and spawning a soundtrack album which is still regarded as one of the greats.
Welsh revisited the novel's characters in 2002 with 'Porno', set nine years after the original.
Plans for a film adaption halted when Boyle stated that he wanted to wait until the principal cast from the first film had aged to match the book's timeline.
However, Welsh revealed to STV that he has recently worked with Boyle on plans to put a sequel on the silver screen.
"We spent a couple of weeks in flat by the castle kinda just working away on the script and hanging out and meeting people."
Would you like to see a sequel to Trainspotting? Or is it a classic best left alone?
Irvine's new book "A Decent Ride" is out now in bookstores and digital formats