diff --git a/flake.nix b/flake.nix
index 84163b959..b6dfe0126 100644
--- a/flake.nix
+++ b/flake.nix
@@ -91,6 +91,13 @@
     # keep-sorted end
   };
 
+  nixConfig = {
+    extra-substituters = [ "https://nix-community.cachix.org" ];
+    extra-trusted-public-keys = [
+      "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
+    ];
+  };
+
   outputs =
     { flake-parts, systems, ... }@inputs:
     flake-parts.lib.mkFlake { inherit inputs; } {