diff --git a/poetry.lock b/poetry.lock
index 3d74982..fe0f29d 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -752,6 +752,37 @@ postgres = ["asyncpg (>=0.24,<0.28)", "psycopg2-binary (>=2.9.1,<3.0.0)"]
 postgresql = ["asyncpg (>=0.24,<0.28)", "psycopg2-binary (>=2.9.1,<3.0.0)"]
 sqlite = ["aiosqlite (>=0.17,<0.19)"]
 
+[[package]]
+name = "ormsgpack"
+version = "1.2.5"
+description = "Fast, correct Python msgpack library supporting dataclasses, datetimes, and numpy"
+category = "main"
+optional = false
+python-versions = ">=3.7"
+files = [
+    {file = "ormsgpack-1.2.5-cp310-cp310-macosx_10_7_x86_64.whl", hash = "sha256:95b97d8d184df1b75bfd3a460ba4aea32ac5b29382d96a282a04ae6cb7d7d6e5"},
+    {file = "ormsgpack-1.2.5-cp310-cp310-macosx_10_9_x86_64.macosx_11_0_arm64.macosx_10_9_universal2.whl", hash = "sha256:afca4b4580469fdc50b16427c9cd71bf8fd2dabf7f709408f0891b350c9effa9"},
+    {file = "ormsgpack-1.2.5-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:55a2d59d0e443e60b1218adfe6e8a85cdb8427e49890bc6c9c1e11877fab2ec5"},
+    {file = "ormsgpack-1.2.5-cp310-none-win_amd64.whl", hash = "sha256:5d0b823a6cef057ebedd34872c6df1f7b89d969faa1344ad11b93c5cce25c95b"},
+    {file = "ormsgpack-1.2.5-cp311-cp311-macosx_10_7_x86_64.whl", hash = "sha256:b95efb8c1a27bd83190bec67b4b94951c84509b9bf79564dfbaa088e458f4c60"},
+    {file = "ormsgpack-1.2.5-cp311-cp311-macosx_10_9_x86_64.macosx_11_0_arm64.macosx_10_9_universal2.whl", hash = "sha256:55500ebdb807e4fa0f797c753cbe9efbbf9bbac1dc9c6589e51bad75382b793c"},
+    {file = "ormsgpack-1.2.5-cp311-cp311-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:c4ccfd2475cf7cf985c69ef81d975ff3bf9a3989901b6cca41eeb1e580f3e1be"},
+    {file = "ormsgpack-1.2.5-cp311-none-win_amd64.whl", hash = "sha256:56b7056285d81451523bd9d79d84bee2993110887759db20854a7901c3d7a6cd"},
+    {file = "ormsgpack-1.2.5-cp37-cp37m-macosx_10_7_x86_64.whl", hash = "sha256:e5fb54e19be45f0079be496dcb8e6fea3e00731da6c5df445c68d33d701c4d48"},
+    {file = "ormsgpack-1.2.5-cp37-cp37m-macosx_10_9_x86_64.macosx_11_0_arm64.macosx_10_9_universal2.whl", hash = "sha256:9de408792fdc47795f2780ca950d95441b366f9d9e30fec35f0f1bbe2c2af6ef"},
+    {file = "ormsgpack-1.2.5-cp37-cp37m-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:6c05479bed27e9a0d33798628891a38d3e55c22fc851e37f76c73684196c74cc"},
+    {file = "ormsgpack-1.2.5-cp37-none-win_amd64.whl", hash = "sha256:6b25ae7c50c7bd2442a3c56ad507a656bd02ba2bb17fad8c57f7694297509287"},
+    {file = "ormsgpack-1.2.5-cp38-cp38-macosx_10_7_x86_64.whl", hash = "sha256:41eed49ea3ec4193d35fc17add4d838289c59a29c976891aec22019d8c2a2587"},
+    {file = "ormsgpack-1.2.5-cp38-cp38-macosx_10_9_x86_64.macosx_11_0_arm64.macosx_10_9_universal2.whl", hash = "sha256:47e89c455b33fb4d6088a763a9e81203f5c88c6aabbcbdbd118bffbe0a4638ff"},
+    {file = "ormsgpack-1.2.5-cp38-cp38-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:dc95c9cb26e99312e7f073aedecdce91a208e245f86e47a2cb719b27b2d1e9d1"},
+    {file = "ormsgpack-1.2.5-cp38-none-win_amd64.whl", hash = "sha256:16e09a3bedea1ff5ffe40b29ad566932520752e81964b55f20751a7a15edca83"},
+    {file = "ormsgpack-1.2.5-cp39-cp39-macosx_10_7_x86_64.whl", hash = "sha256:a7f1c5d76197d8d5d61c7ce15951db2f8e52ab7388c797e7a6b9d383752dc263"},
+    {file = "ormsgpack-1.2.5-cp39-cp39-macosx_10_9_x86_64.macosx_11_0_arm64.macosx_10_9_universal2.whl", hash = "sha256:a423d470f06e6de73bd789dbb029c149309140ae85001c9c870755404bfb04f1"},
+    {file = "ormsgpack-1.2.5-cp39-cp39-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:4f1e2eae32bbd6f8871f1df34e51a5fe5bc4da4ed371d40ae9b4ce2f4e8de2f4"},
+    {file = "ormsgpack-1.2.5-cp39-none-win_amd64.whl", hash = "sha256:5621f63350e0506bb0c02f137ea9de587ebd1e90fc925a7ec2be6bdc2590e3b4"},
+    {file = "ormsgpack-1.2.5.tar.gz", hash = "sha256:f761a67ff2019d7e33f558de1622c815c71e35daf67548b183b2f9d6d985de2c"},
+]
+
 [[package]]
 name = "platformdirs"
 version = "2.6.2"
@@ -1450,4 +1481,4 @@ files = [
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.11"
-content-hash = "122e849f8af6d64f1aff5fa2dd9c1bcd47c1d0ba4a180e2161dbd7f3ffff736f"
+content-hash = "a93a240cad8958a709a0029c81d58846bd27fc77c7ff66a83d0f79f5a44bcb6c"
diff --git a/pyproject.toml b/pyproject.toml
index 67b9689..7e0c565 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -18,6 +18,7 @@ uvloop = "^0.17.0"
 gunicorn = "^20.1.0"
 sentry-sdk = "^1.14.0"
 redis = {extras = ["hiredis"], version = "^4.4.2"}
+ormsgpack = "^1.2.5"
 
 [tool.poetry.dev-dependencies]
 
diff --git a/src/app/services/users_data_manager.py b/src/app/services/users_data_manager.py
index ed482b5..e988af4 100644
--- a/src/app/services/users_data_manager.py
+++ b/src/app/services/users_data_manager.py
@@ -1,7 +1,7 @@
 from typing import Optional, Union
 
 from fastapi import HTTPException, status
-import orjson
+import ormsgpack
 from redis import asyncio as aioredis
 
 from app.models import User
@@ -18,7 +18,7 @@ class UsersDataManager:
 
     @classmethod
     def _get_cache_key(cls, user_id: int) -> str:
-        return f"user_{user_id}"
+        return f"user_v2_{user_id}"
 
     @classmethod
     async def _get_user_from_cache(
@@ -31,7 +31,7 @@ class UsersDataManager:
             if data is None:
                 return None
 
-            return UserDetail.parse_obj(orjson.loads(data))
+            return UserDetail.parse_obj(ormsgpack.unpackb(data))
 
         except aioredis.RedisError:
             return None
@@ -40,7 +40,7 @@ class UsersDataManager:
     async def _cache_user(cls, user: User, redis: aioredis.Redis) -> bool:
         try:
             key = cls._get_cache_key(user.id)
-            data = orjson.dumps(user.dict())
+            data = ormsgpack.packb(user.dict())
             await redis.set(key, data)
             return True
         except aioredis.RedisError: