diff --git a/flake.nix b/flake.nix
index 092923c..5d72596 100644
--- a/flake.nix
+++ b/flake.nix
@@ -3,11 +3,10 @@
 
   nixConfig = {
     extra-substituters =
-      [ "https://cachix.cachix.org" "https://nix-community.cachix.org" ];
-    extra-trusted-public-keys = [
-      "cachix.cachix.org-1:eWNHQldwUO7G2VkjpnjDbWwy4KQ/HNxht7H4SSoMckM="
-      "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
-    ];
+      "https://cachix.cachix.org https://nix-community.cachix.org";
+    extra-trusted-public-keys = ''
+      cachix.cachix.org-1:eWNHQldwUO7G2VkjpnjDbWwy4KQ/HNxht7H4SSoMckM=
+            nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs='';
   };
 
   inputs = {