diff --git a/flake.nix b/flake.nix
index e7d6893..3e7d0d1 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,5 +1,15 @@
 {
   description = "FredOS NixOS configuration";
+
+  nixConfig = {
+    extra-substituters =[
+      "https://cuda-maintainers.cachix.org"
+    ];
+    extra-trusted-public-keys =[
+      "cuda-maintainers.cachix.org-1:0dq3bujKpuEPMCX6U4WylrUDZ9JyUG0VpVZa7CNfq5E="
+    ];
+  };
+
   inputs = {
     nixpkgs-stable.url = "github:NixOS/nixpkgs/nixos-25.11";
     home-manager-stable = {