Cast members have signed construction beams for the Monsters, Inc.-inspired door coaster taking shape in Monstropolis at Disney’s Hollywood Studios.

Disney shared video of cast members writing their names in white on a black beam. Beam signings are a long-standing tradition for new Disney attractions under construction, according to WDWNT.

Monstropolis is replacing Muppets Courtyard and is planned to open in phases. Disney has said most of the land will open next year, though it has not announced an opening timeframe for the coaster.

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When it opens, the attraction is expected to be Disney’s first vertical-lift coaster and its first suspended coaster. Construction updates have previously offered views of the ride’s load area, launch and the developing track route.