diff --git a/deepset_cloud_sdk/_s3/upload.py b/deepset_cloud_sdk/_s3/upload.py
index 529f281c..52b63d0a 100644
--- a/deepset_cloud_sdk/_s3/upload.py
+++ b/deepset_cloud_sdk/_s3/upload.py
@@ -27,7 +27,9 @@
 class RetryableHttpError(Exception):
     """An error that indicates a function should be retried."""
 
-    def __init__(self, error: Union[aiohttp.ClientResponseError, aiohttp.ServerDisconnectedError]) -> None:
+    def __init__(
+        self, error: Union[aiohttp.ClientResponseError, aiohttp.ServerDisconnectedError, aiohttp.ClientConnectionError]
+    ) -> None:
         """Store the original exception."""
         self.error = error