diff --git a/configuration.nix b/configuration.nix
index e843abe..429dd2c 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -15,8 +15,9 @@
       ./roles/desktop.nix
       ./roles/dev.nix
       ./roles/mail.nix
-      ./roles/vpn.nix
       ./roles/network.nix
+      ./roles/nix.nix
+      ./roles/vpn.nix
       ./roles/work.nix
     ];
 
diff --git a/roles/nix.nix b/roles/nix.nix
new file mode 100644
index 0000000..97bbe06
--- /dev/null
+++ b/roles/nix.nix
@@ -0,0 +1,11 @@
+{ config, lib, pkgs, ... }:
+
+{
+
+  nix.gc = {
+    automatic = true;
+    dates = "weekly";
+    options = "--delete-older-than 30d";
+  };
+
+}