diff --git a/shell.nix b/shell.nix
index b8be3a3a6088a987468329ad29919a6957313c6a..1bc220f53c9c19223104132caa08272a7383c0b3 100644
--- a/shell.nix
+++ b/shell.nix
@@ -22,6 +22,7 @@ pkgs.mkShell {
   inputsFrom = [tools];
   buildInputs = [
     tools
+    pkgs.nix
     pkgs.morph
     pkgs.jp
   ];