Greenbelt Harvest Picnic ticketholders will be able to get a partial discount on their tickets after Neil Young and Crazy Horse pulled out of the show.
Organizers are offering a $40 refund. The new ticket price is $99.50. Ticketholders can pick up a refund through the point of purchase.
More acts are being added to the lineup that haven't been announced, says picnic founder and producer Jean-Paul Gauthier.
Rolling Stone reported Monday afternoon Young's band was forced to cancel the North American leg of their tour because of an injury to guitarist's Frank Sampedro's hand. The Greenbelt Harvest Picnic is scheduled for Aug. 31.
This also means the band has given up their headlining spot at the Ottawa Folk Festival on Sept. 4.
Young also cancelled the seven European dates earlier in August because of Sampedro's injury.
This year's show features performances by Daniel Lanois, Emmylou Harris, the Arkells, Pegi Young and the Survivors, Trixie Whitley, Rocco DeLuca, Harlan Pepper, Whitehorse and Basia Bulat.