diff --git a/pkgs/development/python-modules/aiotankerkoenig/default.nix b/pkgs/development/python-modules/aiotankerkoenig/default.nix
index a82a963419cc..7a613b0705ba 100644
--- a/pkgs/development/python-modules/aiotankerkoenig/default.nix
+++ b/pkgs/development/python-modules/aiotankerkoenig/default.nix
@@ -8,6 +8,7 @@
   orjson,
   poetry-core,
   pytest-asyncio,
+  pytest-cov-stub,
   pytestCheckHook,
   pythonOlder,
   syrupy,
@@ -30,12 +31,12 @@ buildPythonPackage rec {
 
   postPatch = ''
     substituteInPlace pyproject.toml \
-      --replace-fail "--cov" ""
+      --replace-fail 'version = "0.0.0"' 'version = "${version}"'
   '';
 
-  nativeBuildInputs = [ poetry-core ];
+  build-system = [ poetry-core ];
 
-  propagatedBuildInputs = [
+  dependencies = [
     aiohttp
     mashumaro
     orjson
@@ -45,6 +46,7 @@ buildPythonPackage rec {
   nativeCheckInputs = [
     aioresponses
     pytest-asyncio
+    pytest-cov-stub
     pytestCheckHook
     syrupy
   ];