diff --git a/storage3/_async/file_api.py b/storage3/_async/file_api.py
index 8529eca..341990e 100644
--- a/storage3/_async/file_api.py
+++ b/storage3/_async/file_api.py
@@ -489,7 +489,7 @@ async def upload(
         path: str,
         file: Union[BufferedReader, bytes, FileIO, str, Path],
         file_options: Optional[FileOptions] = None,
-    ) -> Response:
+    ) -> UploadResponse:
         """
         Uploads a file to an existing bucket.
 
diff --git a/storage3/_sync/file_api.py b/storage3/_sync/file_api.py
index 140c89a..1e68f2d 100644
--- a/storage3/_sync/file_api.py
+++ b/storage3/_sync/file_api.py
@@ -489,7 +489,7 @@ def upload(
         path: str,
         file: Union[BufferedReader, bytes, FileIO, str, Path],
         file_options: Optional[FileOptions] = None,
-    ) -> Response:
+    ) -> UploadResponse:
         """
         Uploads a file to an existing bucket.