diff --git a/configuration.nix b/configuration.nix
index d442ea8..d2aee0c 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -32,10 +32,15 @@
     optimise.automatic = true;
 
     # enable flakes!
-    settings.experimental-features = [
-      "nix-command"
-      "flakes"
-    ];
+    settings = {
+      experimental-features = [
+        "nix-command"
+        "flakes"
+      ];
+
+      substituters = lib.mkForce [ ];
+      trusted-public-keys = lib.mkForce [ ];
+    };
   };
 
   # https://github.com/viperML/nh