diff --git a/flake.nix b/flake.nix
index 5b94a40..d49ef26 100644
--- a/flake.nix
+++ b/flake.nix
@@ -3,6 +3,7 @@
 
   inputs = {
     nixpkgs.url = "nixpkgs/nixos-unstable";
+    inputs.utils.url = "github:numtide/flake-utils";
   };
 
   outputs =