diff --git a/flake.nix b/flake.nix
index 6eafbb5..8f12d10 100644
--- a/flake.nix
+++ b/flake.nix
@@ -34,6 +34,7 @@
           default = pkgs.mkShell {
             shellHook = ''
               PS1='\u@\h:\@; '
+              nix run github:qbit/xin#flake-warn
               echo "Go `${pkgs.go}/bin/go version`"
             '';
             nativeBuildInputs = with pkgs; [