diff --git a/justfile b/justfile
index e84e600..5f47852 100644
--- a/justfile
+++ b/justfile
@@ -11,7 +11,7 @@ update:
 
 # Clean up old generations and optimize store
 gc:
-    sudo nix-collect-garbage -d
+    sudo nix-collect-garbage --delete-older-than 14d
     sudo nix-store --optimise
     sudo nixos-rebuild boot --flake .#{{host}}