diff --git a/ya_tracker_client/domain/client/base.py b/ya_tracker_client/domain/client/base.py
index c8adffb..ac19adf 100644
--- a/ya_tracker_client/domain/client/base.py
+++ b/ya_tracker_client/domain/client/base.py
@@ -1,8 +1,11 @@
 from abc import ABC, abstractmethod
 from http import HTTPStatus
+from json import dumps
 from logging import getLogger
 from typing import Any
 
+from aiohttp import BytesPayload
+
 from ya_tracker_client.domain.client.errors import (
     ClientAuthError,
     ClientError,
@@ -55,11 +58,17 @@ async def request(
         payload: dict[str, Any] | None = None,
     ) -> bytes:
         uri = f"{self._base_url}/{self._api_version}{uri}"
+
+        bytes_payload = BytesPayload(
+            value=bytes(dumps(payload), encoding="utf-8"),
+            content_type="application/json",
+        )
+
         status, body = await self._make_request(
             method=method,
             url=uri,
             params=params,
-            data=payload,
+            data=bytes_payload,
         )
         self._check_status(status, body)
         return body
@@ -70,7 +79,7 @@ async def _make_request(
         method: str,
         url: str,
         params: dict[str, Any] | None = None,
-        data: bytes | None = None,
+        data: bytes | BytesPayload | None = None,
     ) -> tuple[int, bytes]:
         """
         Get raw response from via http-client.
diff --git a/ya_tracker_client/infrastructure/client.py b/ya_tracker_client/infrastructure/client.py
index 1f47ba0..3233028 100644
--- a/ya_tracker_client/infrastructure/client.py
+++ b/ya_tracker_client/infrastructure/client.py
@@ -2,7 +2,7 @@
 from ssl import create_default_context
 from typing import Any
 
-from aiohttp import ClientSession, ClientTimeout, TCPConnector
+from aiohttp import BytesPayload, ClientSession, ClientTimeout, TCPConnector
 from certifi import where
 
 from ya_tracker_client.domain.client import BaseClient
@@ -51,7 +51,7 @@ async def _make_request(
         method: str,
         url: str,
         params: dict[str, Any] | None = None,
-        data: bytes | None = None,
+        data: bytes | BytesPayload | None = None,
     ) -> tuple[int, bytes]:
         session = self._get_session()
         async with session.request(method, url, params=params, data=data) as response: