diff --git a/pkgs/development/python-modules/bluemaestro-ble/default.nix b/pkgs/development/python-modules/bluemaestro-ble/default.nix
index 0abea089d86e..d153c721f7aa 100644
--- a/pkgs/development/python-modules/bluemaestro-ble/default.nix
+++ b/pkgs/development/python-modules/bluemaestro-ble/default.nix
@@ -5,6 +5,7 @@
   buildPythonPackage,
   fetchFromGitHub,
   poetry-core,
+  pytest-cov-stub,
   pytestCheckHook,
   pythonOlder,
   sensor-state-data,
@@ -32,12 +33,10 @@ buildPythonPackage rec {
     sensor-state-data
   ];
 
-  nativeCheckInputs = [ pytestCheckHook ];
-
-  postPatch = ''
-    substituteInPlace pyproject.toml \
-      --replace " --cov=bluemaestro_ble --cov-report=term-missing:skip-covered" ""
-  '';
+  nativeCheckInputs = [
+    pytest-cov-stub
+    pytestCheckHook
+  ];
 
   pythonImportsCheck = [ "bluemaestro_ble" ];