diff --git a/pkgs/development/python-modules/pastedeploy/default.nix b/pkgs/development/python-modules/pastedeploy/default.nix
index 945a07d525dd..722ff6f8b4be 100644
--- a/pkgs/development/python-modules/pastedeploy/default.nix
+++ b/pkgs/development/python-modules/pastedeploy/default.nix
@@ -3,6 +3,7 @@
   buildPythonPackage,
   fetchFromGitHub,
   pytestCheckHook,
+  pytest-cov-stub,
   pythonOlder,
   setuptools,
 }:
@@ -21,14 +22,12 @@ buildPythonPackage rec {
     hash = "sha256-yR7UxAeF0fQrbU7tl29GpPeEAc4YcxHdNQWMD67pP3g=";
   };
 
-  postPatch = ''
-    substituteInPlace pytest.ini \
-      --replace-fail " --cov" ""
-  '';
-
   build-system = [ setuptools ];
 
-  nativeCheckInputs = [ pytestCheckHook ];
+  nativeCheckInputs = [
+    pytestCheckHook
+    pytest-cov-stub
+  ];
 
   pythonImportsCheck = [ "paste.deploy" ];