diff --git a/hosts/luna/modules/nix.nix b/hosts/luna/modules/nix.nix
index c927705d..fe20ed57 100755
--- a/hosts/luna/modules/nix.nix
+++ b/hosts/luna/modules/nix.nix
@@ -1,4 +1,4 @@
-{ pkgs, ... }:
+{ ... }:
 {
   nix = {
     settings = {
@@ -11,6 +11,7 @@
     };
     gc = {
       automatic = true;
+      options = "--delete-older-than 7d";
       dates = "daily";
     };
   };