diff --git a/lib/dl_file_uploader_lib/dl_file_uploader_lib/yadocs_client.py b/lib/dl_file_uploader_lib/dl_file_uploader_lib/yadocs_client.py
index c0aab4648..a310aacf9 100644
--- a/lib/dl_file_uploader_lib/dl_file_uploader_lib/yadocs_client.py
+++ b/lib/dl_file_uploader_lib/dl_file_uploader_lib/yadocs_client.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from typing import Any
 
 from aiohttp.client import (
@@ -44,7 +46,7 @@ async def get_spreadsheet_public_ref(self, link: str) -> str:
             raise yadocs_error_to_file_uploader_exception(resp.status, await resp.json())
         return (await resp.json())["href"]
 
-    async def get_spreadsheet_public_meta(self, link: str) -> ClientResponse:
+    async def get_spreadsheet_public_meta(self, link: str) -> dict[str, Any]:
         resp = await self.session.get(
             f"{self.hostname}/public/resources/?public_key={link}",
             headers=self.headers,
@@ -63,7 +65,7 @@ async def get_spreadsheet_private_ref(self, path: str, token: str) -> str:
             raise yadocs_error_to_file_uploader_exception(resp.status, await resp.json())
         return (await resp.json())["href"]
 
-    async def get_spreadsheet_private_meta(self, path: str, token: str) -> ClientResponse:
+    async def get_spreadsheet_private_meta(self, path: str, token: str) -> dict[str, Any]:
         headers_with_token = self._create_headers_with_token(token)
         resp = await self.session.get(
             f"{self.hostname}/resources/?path={path}",
diff --git a/lib/dl_file_uploader_worker_lib/dl_file_uploader_worker_lib/tasks/download_yadocs.py b/lib/dl_file_uploader_worker_lib/dl_file_uploader_worker_lib/tasks/download_yadocs.py
index 2b39ecedd..818dca1e6 100644
--- a/lib/dl_file_uploader_worker_lib/dl_file_uploader_worker_lib/tasks/download_yadocs.py
+++ b/lib/dl_file_uploader_worker_lib/dl_file_uploader_worker_lib/tasks/download_yadocs.py
@@ -1,6 +1,5 @@
 from __future__ import annotations
 
-
 import logging
 from typing import Optional
 
@@ -8,20 +7,21 @@
 import attr
 
 from dl_constants.enums import FileProcessingStatus
-
 from dl_file_uploader_lib import exc
 from dl_file_uploader_lib.data_sink.raw_bytes import (
     RawBytesAsyncDataStream,
     S3RawFileAsyncDataSink,
 )
-
 from dl_file_uploader_lib.redis_model.base import RedisModelManager
 from dl_file_uploader_lib.redis_model.models import (
     DataFile,
     FileProcessingError,
     YaDocsUserSourceProperties,
 )
-from dl_file_uploader_lib.yadocs_client import YaDocsClient, yadocs_error_to_file_uploader_exception
+from dl_file_uploader_lib.yadocs_client import (
+    YaDocsClient,
+    yadocs_error_to_file_uploader_exception,
+)
 from dl_file_uploader_task_interface.context import FileUploaderTaskContext
 import dl_file_uploader_task_interface.tasks as task_interface
 from dl_task_processor.task import (
@@ -87,7 +87,7 @@ async def run(self) -> TaskResult:
             dfile.filename = spreadsheet_meta["name"]
             s3 = self._ctx.s3_service
 
-            async def _chunk_iter(chunk_size: int = 10 * 1024 * 1024):
+            async def _chunk_iter(chunk_size: int = 10 * 1024 * 1024) -> None:
                 async with aiohttp.ClientSession() as session:
                     async with session.get(spreadsheet_ref) as resp:
                         if resp.status != 200: