diff --git a/pkgs/development/python-modules/pytest-describe/default.nix b/pkgs/development/python-modules/pytest-describe/default.nix
index 7f5fbf361597..52e7764ce43b 100644
--- a/pkgs/development/python-modules/pytest-describe/default.nix
+++ b/pkgs/development/python-modules/pytest-describe/default.nix
@@ -6,6 +6,7 @@
 , pytest
 
 # tests
+, py
 , pytestCheckHook
 }:
 
@@ -27,6 +28,7 @@ buildPythonPackage {
   ];
 
   checkInputs = [
+    py
     pytestCheckHook
   ];