diff --git a/pkgs/development/python-modules/pyorthanc/default.nix b/pkgs/development/python-modules/pyorthanc/default.nix
index bb302c78247b..3c5b2ec5b78d 100644
--- a/pkgs/development/python-modules/pyorthanc/default.nix
+++ b/pkgs/development/python-modules/pyorthanc/default.nix
@@ -2,7 +2,6 @@
 , buildPythonPackage
 , fetchFromGitHub
 , pythonOlder
-, pytestCheckHook
 , pythonRelaxDepsHook
 , poetry-core
 , httpx