diff --git a/pkgs/development/python-modules/elgato/default.nix b/pkgs/development/python-modules/elgato/default.nix
index 8da6e8bd1042..6744422eb8bf 100644
--- a/pkgs/development/python-modules/elgato/default.nix
+++ b/pkgs/development/python-modules/elgato/default.nix
@@ -8,6 +8,7 @@
   orjson,
   poetry-core,
   pytest-asyncio,
+  pytest-cov-stub,
   pytestCheckHook,
   pythonOlder,
   yarl,
@@ -16,7 +17,7 @@
 buildPythonPackage rec {
   pname = "elgato";
   version = "5.1.2";
-  format = "pyproject";
+  pyproject = true;
 
   disabled = pythonOlder "3.11";
 
@@ -31,12 +32,11 @@ buildPythonPackage rec {
     # Upstream doesn't set a version for the pyproject.toml
     substituteInPlace pyproject.toml \
       --replace "0.0.0" "${version}" \
-      --replace "--cov" ""
   '';
 
-  nativeBuildInputs = [ poetry-core ];
+  build-system = [ poetry-core ];
 
-  propagatedBuildInputs = [
+  dependencies = [
     aiohttp
     mashumaro
     orjson
@@ -46,6 +46,7 @@ buildPythonPackage rec {
   nativeCheckInputs = [
     aresponses
     pytest-asyncio
+    pytest-cov-stub
     pytestCheckHook
   ];
 
@@ -55,7 +56,7 @@ buildPythonPackage rec {
     description = "Python client for Elgato Key Lights";
     homepage = "https://github.com/frenck/python-elgato";
     changelog = "https://github.com/frenck/python-elgato/releases/tag/v${version}";
-    license = with licenses; [ mit ];
+    license = licenses.mit;
     maintainers = with maintainers; [ fab ];
   };
 }