diff --git a/odc/geo/cog/_az.py b/odc/geo/cog/_az.py
index d3e30a36..03b811cc 100644
--- a/odc/geo/cog/_az.py
+++ b/odc/geo/cog/_az.py
@@ -184,4 +184,4 @@ def finalise(self, parts: List[Dict[str, Any]]) -> str:
         :param parts: List of uploaded parts metadata.
         :return: ETag of the finalised blob.
         """
-        return self.mpu.finalise(parts)
\ No newline at end of file
+        return self.mpu.finalise(parts)
diff --git a/odc/geo/cog/_s3.py b/odc/geo/cog/_s3.py
index 1d272cd4..19dcff57 100644
--- a/odc/geo/cog/_s3.py
+++ b/odc/geo/cog/_s3.py
@@ -148,7 +148,7 @@ def finalise(self, parts: List[Dict[str, Any]]) -> str:
             MultipartUpload={"Parts": parts},
         )
         return rr["ETag"]
-        
+
     @property
     def started(self) -> bool:
         """Check if the multipart upload has been initiated."""
diff --git a/odc/geo/cog/_tifffile.py b/odc/geo/cog/_tifffile.py
index b3062cdc..4a7cf451 100644
--- a/odc/geo/cog/_tifffile.py
+++ b/odc/geo/cog/_tifffile.py
@@ -672,7 +672,7 @@ def save_cog_with_dask(
     xx_odc = xx.odc
     assert isinstance(xx_odc, ODCExtensionDa)
     assert isinstance(xx_odc.geobox, GeoBox) or xx_odc.geobox is None
-    
+
     ydim = xx_odc.ydim
     data_chunks: Tuple[int, int] = xx.data.chunksize[ydim:ydim + 2]
     if isinstance(blocksize, Unset):
diff --git a/tests/test_az.py b/tests/test_az.py
index 010b4167..193f2fb0 100644
--- a/tests/test_az.py
+++ b/tests/test_az.py
@@ -27,7 +27,7 @@ def test_azure_multipart_upload(self, mock_blob_service_client):
         mcc = mock_container_client
         mock_blob_service_client.return_value.get_container_client.return_value = mcc
         mock_container_client.get_blob_client.return_value = mock_blob_client
-        
+
         # Simulate return values for Azure Blob SDK methods
         mock_blob_client.get_blob_properties.return_value.etag = "mock-etag"