diff --git a/py-rattler/rattler/package/index_json.py b/py-rattler/rattler/package/index_json.py
index 9a8a38a55..87a6006b4 100644
--- a/py-rattler/rattler/package/index_json.py
+++ b/py-rattler/rattler/package/index_json.py
@@ -43,9 +43,7 @@ def from_package_directory(path: os.PathLike[str]) -> IndexJson:
         resulting object. If the file is not in a parsable format or if the file
         could not be read, this function returns an error.
         """
-        return IndexJson._from_py_index_json(
-            PyIndexJson.from_package_directory(Path(path))
-        )
+        return IndexJson._from_py_index_json(PyIndexJson.from_package_directory(Path(path)))
 
     @staticmethod
     def from_str(string: str) -> IndexJson: