diff --git a/hosts/default/configuration.nix b/hosts/default/configuration.nix
index f34f952..9b0dbdd 100644
--- a/hosts/default/configuration.nix
+++ b/hosts/default/configuration.nix
@@ -43,7 +43,7 @@
 		optimise.automatic = true;
 		gc = {
 			automatic = true;
-			interval = "weekly";
+			dates = "weekly";
 			options = "--delete-older-than 7d";
 		};
 	};