diff --git a/hosts/gc.nix b/hosts/gc.nix
new file mode 100644
index 0000000..2c5db81
--- /dev/null
+++ b/hosts/gc.nix
@@ -0,0 +1,8 @@
+{ config, ... }:
+{
+  nix.gc = {
+    automatic = true;
+    dates = "weekly";
+    options = "--delete-older-than 10d";
+  };
+}
diff --git a/hosts/lilith/default.nix b/hosts/lilith/default.nix
index d62b73f..bd26c31 100644
--- a/hosts/lilith/default.nix
+++ b/hosts/lilith/default.nix
@@ -5,6 +5,7 @@
     [ # Include the results of the hardware scan.
       ./hardware-configuration.nix
       ../antivirus.nix
+      ../gc.nix
       #nixos-hardware.nixosModules.lenovo.thinkpad.t480
       #(builtins.getFlake (builtins.fetchGit "github:NixOs/nixos-hardware")).nixosModules.lenovo-thinkpad-t480
     ];