diff --git a/nix/justfile b/nix/justfile
index e932fba..0a121f0 100644
--- a/nix/justfile
+++ b/nix/justfile
@@ -3,3 +3,7 @@ switch:
 
 bootstrap:
     nix run --extra-experimental-features "nix-command flakes" --no-write-lock-file github:nix-community/home-manager/ -- --extra-experimental-features "nix-command flakes" --flake . switch
+
+gc:
+    home-manager expire-generations -7days
+    nix store gc