diff --git a/nixosModules/nix.nix b/nixosModules/nix.nix
index 992d515..b1ec9d4 100644
--- a/nixosModules/nix.nix
+++ b/nixosModules/nix.nix
@@ -31,6 +31,12 @@
     # Other nix settings
     #
     settings = {
+      substituters = [
+        "https://nix-community.cachix.org"
+      ];
+      trusted-public-keys = [
+        "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
+      ];
       experimental-features = [
         "auto-allocate-uids"
         "ca-derivations"