diff --git a/src/polartoolkit/fetch.py b/src/polartoolkit/fetch.py
index 657df15a..c17101d3 100644
--- a/src/polartoolkit/fetch.py
+++ b/src/polartoolkit/fetch.py
@@ -244,6 +244,7 @@ def __call__(self, url: str, output_file: str, dataset: typing.Any) -> None:
         login = requests.get(url, timeout=30)
         downloader(login.url, output_file, dataset)
 
+
 def sample_shp(name: str) -> str:
     """
     Load the file path of sample shapefiles