diff --git a/pkgs/development/python-modules/pybind11/default.nix b/pkgs/development/python-modules/pybind11/default.nix
index 186dca2c17d0..9eeb40225cab 100644
--- a/pkgs/development/python-modules/pybind11/default.nix
+++ b/pkgs/development/python-modules/pybind11/default.nix
@@ -12,7 +12,6 @@
 , pytestCheckHook
 , libxcrypt
 , makeSetupHook
-, darwin
 }: let
   setupHook = makeSetupHook {
     name = "pybind11-setup-hook";