diff --git a/Makefile b/Makefile
index 05fe9af..1a183ff 100644
--- a/Makefile
+++ b/Makefile
@@ -25,6 +25,9 @@ optimise:
 rebuild-switch:
 	nixos-rebuild switch --fallback  --show-trace
 
+show-roots:
+	nix-store --gc --print-roots
+
 store-repair:
 	nix-store --verify --check-contents --repair