diff --git a/pkgs/development/python-modules/ome-zarr/default.nix b/pkgs/development/python-modules/ome-zarr/default.nix
index f7f54671669b..0412a0f80718 100644
--- a/pkgs/development/python-modules/ome-zarr/default.nix
+++ b/pkgs/development/python-modules/ome-zarr/default.nix
@@ -2,7 +2,6 @@
 , buildPythonPackage
 , pythonOlder
 , fetchFromGitHub
-, fetchpatch
 , pytestCheckHook
 , aiohttp
 , dask