diff --git a/herbie/hrrr_zarr.py b/herbie/hrrr_zarr.py
index a5730f4a..c24e1c7b 100644
--- a/herbie/hrrr_zarr.py
+++ b/herbie/hrrr_zarr.py
@@ -10,6 +10,7 @@
 - https://mesowest.utah.edu/html/hrrr/zarr_documentation/html/xarray_one_day_analysis_example.html
 - https://github.com/ProjectPythia/intake-cookbook/tree/main/notebooks
 """
+
 import datetime
 
 import cartopy.crs as ccrs