If you still want to see dinosaurs in D.C., you’d better hurry.

The Smithsonian National Museum of Natural History’s fossils exhibit will close Monday, April 28 for five-year renovations. The upgrade, which will cost a total of $48 million, will bring one of the most complete Tyrannosaurus rex skeletons to the second-most visited museum in the world.

The dinosaur, which was first discovered by hikers in Montana, will be on loan from the Army Corps of Engineers for 50 years.

Until the ancient fossils hall opens in 2019, there is a temporary fix: The Smithsonian museum will install a smaller-scale exhibit to give budding paleontologists a chance to see a few of the old reptiles.