diff --git a/system-modules/nix.nix b/system-modules/nix.nix
index 651f9ac..5fcbe0b 100644
--- a/system-modules/nix.nix
+++ b/system-modules/nix.nix
@@ -3,12 +3,12 @@
     experimental-features = [ "nix-command" "flakes" ];
     substituters = [
       "https://cache.nixos.org/"
-      "https://cache.nixos-cuda.org"
+      # "https://cache.nixos-cuda.org"
       "https://nix-community.cachix.org"
     ];
     trusted-public-keys = [
       "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
-      "cache.nixos-cuda.org:74DUi4Ye579gUqzH4ziL9IyiJBlDpMRn9MBN8oNan9M="
+      # "cache.nixos-cuda.org:74DUi4Ye579gUqzH4ziL9IyiJBlDpMRn9MBN8oNan9M="
     ];
   };
 }