diff --git a/modules/hosts/sirius/config.nix b/modules/hosts/sirius/config.nix
index 5d91b46..fc7ae3a 100644
--- a/modules/hosts/sirius/config.nix
+++ b/modules/hosts/sirius/config.nix
@@ -88,6 +88,7 @@
           nvidiaSettings = true;
         };
       };
+      nixpkgs.config.cudaSupport = true;
       services.xserver.videoDrivers = [ "nvidia" ];
       environment.systemPackages = with pkgs; [ nvtopPackages.full ];
 
diff --git a/modules/nixos/core/substituters.nix b/modules/nixos/core/substituters.nix
index b08b848..360a53b 100644
--- a/modules/nixos/core/substituters.nix
+++ b/modules/nixos/core/substituters.nix
@@ -13,6 +13,7 @@
         "https://nix-on-droid.cachix.org"
         "https://lan-mouse.cachix.org"
         "https://wezterm.cachix.org"
+        "https://cache.nixos-cuda.org"
       ];
       trusted-substituters = [
         "https://nix-on-droid.cachix.org"
@@ -30,6 +31,7 @@
         "nix-on-droid.cachix.org-1:56snoMJTXmDRC1Ei24CmKoUqvHJ9XCp+nidK7qkMQrU="
         "lan-mouse.cachix.org-1:KlE2AEZUgkzNKM7BIzMQo8w9yJYqUpor1CAUNRY6OyM="
         "wezterm.cachix.org-1:kAbhjYUC9qvblTE+s7S+kl5XM1zVa4skO+E/1IDWdH0="
+        "cache.nixos-cuda.org:74DUi4Ye579gUqzH4ziL9IyiJBlDpMRn9MBN8oNan9M="
       ];
     };
   };