diff --git a/makefile b/makefile
index 59638aa..b19b7c3 100644
--- a/makefile
+++ b/makefile
@@ -9,3 +9,6 @@ update:
 vm:
 	doas nixos-rebuild switch --flake .#vm2 && result/bin/run-*-vm
 
+clean:
+	doas nix-collect-garbage
+	doas nix store optimise