diff --git a/pkgs/development/python-modules/rapt-ble/default.nix b/pkgs/development/python-modules/rapt-ble/default.nix
index dc0d719620e7..488d4318278b 100644
--- a/pkgs/development/python-modules/rapt-ble/default.nix
+++ b/pkgs/development/python-modules/rapt-ble/default.nix
@@ -6,6 +6,7 @@
   fetchFromGitHub,
   home-assistant-bluetooth,
   poetry-core,
+  pytest-cov-stub,
   pytestCheckHook,
   pythonOlder,
   sensor-state-data,
@@ -25,11 +26,6 @@ buildPythonPackage rec {
     hash = "sha256-ozZwVgTV/xYl1nXLiybcPs6DQKocNdbxTEYDfYyQuvY=";
   };
 
-  postPatch = ''
-    substituteInPlace pyproject.toml \
-      --replace " --cov=rapt_ble --cov-report=term-missing:skip-covered" ""
-  '';
-
   build-system = [ poetry-core ];
 
   dependencies = [
@@ -39,7 +35,10 @@ buildPythonPackage rec {
     sensor-state-data
   ];
 
-  nativeCheckInputs = [ pytestCheckHook ];
+  nativeCheckInputs = [
+    pytest-cov-stub
+    pytestCheckHook
+  ];
 
   pythonImportsCheck = [ "rapt_ble" ];