diff --git a/modules/system.nix b/modules/system.nix
index 3c15e5b..92c7d37 100644
--- a/modules/system.nix
+++ b/modules/system.nix
@@ -3,7 +3,15 @@
   pkgs,
   ...
 }: {
-  nix.settings.experimental-features = ["nix-command" "flakes"];
+  nix.settings = {
+    experimental-features = ["nix-command" "flakes"];
+    substituters = [
+      "https://nix-community.cachix.org"
+    ];
+    trusted-public-keys = [
+      "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
+    ];
+  };
 
   # Enable CUPS to print documents.
   services.printing.enable = true;