diff --git a/mdrsclient/api/base.py b/mdrsclient/api/base.py
index 90f0e96..fd08c68 100644
--- a/mdrsclient/api/base.py
+++ b/mdrsclient/api/base.py
@@ -1,7 +1,7 @@
 from abc import ABC
 
 import requests
-from pydantic import parse_obj_as
+from pydantic import TypeAdapter
 from requests import Response
 
 from mdrsclient.connection import MDRSConnection
@@ -24,7 +24,7 @@ class BaseApi(ABC):
         if response.status_code >= 300:
             if response.status_code < 400 or response.status_code >= 500:
                 raise UnexpectedException(f"Unexpected status code returned: {response.status_code}.")
-            errors = parse_obj_as(DRFStandardizedErrors, response.json())
+            errors = TypeAdapter(DRFStandardizedErrors).validate_python(response.json())
             if response.status_code == requests.codes.bad_request:
                 raise BadRequestException(errors.errors[0].detail)
             elif response.status_code == requests.codes.unauthorized:
diff --git a/mdrsclient/api/file.py b/mdrsclient/api/file.py
index a9777f2..26b8254 100644
--- a/mdrsclient/api/file.py
+++ b/mdrsclient/api/file.py
@@ -1,6 +1,6 @@
 from typing import Final
 
-from pydantic import parse_obj_as
+from pydantic import TypeAdapter
 from pydantic.dataclasses import dataclass
 
 from mdrsclient.api.base import BaseApi
@@ -23,7 +23,7 @@ class FileApi(BaseApi):
         token_check(self.connection)
         response = self.connection.get(url)
         self._raise_response_error(response)
-        return parse_obj_as(File, response.json())
+        return TypeAdapter(File).validate_python(response.json())
 
     def create(self, folder_id: str, path: str) -> str:
         # print(self.__class__.__name__ + "::" + sys._getframe().f_code.co_name)
@@ -34,7 +34,7 @@ class FileApi(BaseApi):
             with open(path, mode="rb") as fp:
                 response = self.connection.post(url, data=data, files={"file": fp})
                 self._raise_response_error(response)
-                ret = parse_obj_as(FileCreateResponse, response.json())
+                ret = TypeAdapter(FileCreateResponse).validate_python(response.json())
         except OSError:
             raise UnexpectedException(f"Could not open `{path}` file.")
         return ret.id
diff --git a/mdrsclient/api/folder.py b/mdrsclient/api/folder.py
index 103c170..85215a9 100644
--- a/mdrsclient/api/folder.py
+++ b/mdrsclient/api/folder.py
@@ -1,7 +1,7 @@
 from typing import Final
 
 import requests
-from pydantic import parse_obj_as
+from pydantic import TypeAdapter
 from pydantic.dataclasses import dataclass
 
 from mdrsclient.api.base import BaseApi
@@ -27,7 +27,7 @@ class FolderApi(BaseApi):
         self._raise_response_error(response)
         ret: list[FolderSimple] = []
         for data in response.json():
-            ret.append(parse_obj_as(FolderSimple, data))
+            ret.append(TypeAdapter(FolderSimple).validate_python(data))
         return ret
 
     def retrieve(self, id: str) -> Folder:
@@ -36,7 +36,7 @@ class FolderApi(BaseApi):
         token_check(self.connection)
         response = self.connection.get(url)
         self._raise_response_error(response)
-        ret = parse_obj_as(Folder, response.json())
+        ret = TypeAdapter(Folder).validate_python(response.json())
         return ret
 
     def create(self, name: str, parent_id: str) -> str:
@@ -46,7 +46,7 @@ class FolderApi(BaseApi):
         token_check(self.connection)
         response = self.connection.post(url, data=data)
         self._raise_response_error(response)
-        ret = parse_obj_as(FolderCreateResponse, response.json())
+        ret = TypeAdapter(FolderCreateResponse).validate_python(response.json())
         return ret.id
 
     def update(self, folder: FolderSimple) -> bool:
diff --git a/mdrsclient/api/laboratory.py b/mdrsclient/api/laboratory.py
index 4a5e2bf..a4b697f 100644
--- a/mdrsclient/api/laboratory.py
+++ b/mdrsclient/api/laboratory.py
@@ -1,6 +1,6 @@
 from typing import Final
 
-from pydantic import parse_obj_as
+from pydantic import TypeAdapter
 
 from mdrsclient.api.base import BaseApi
 from mdrsclient.api.utils import token_check
@@ -18,6 +18,6 @@ class LaboratoryApi(BaseApi):
         self._raise_response_error(response)
         ret = Laboratories()
         for data in response.json():
-            ret.append(parse_obj_as(Laboratory, data))
+            ret.append(TypeAdapter(Laboratory).validate_python(data))
         ret.sort()
         return ret
diff --git a/mdrsclient/api/user.py b/mdrsclient/api/user.py
index 9b98cd8..d07224a 100644
--- a/mdrsclient/api/user.py
+++ b/mdrsclient/api/user.py
@@ -1,7 +1,7 @@
 from typing import Final
 
 import requests
-from pydantic import parse_obj_as
+from pydantic import TypeAdapter
 from pydantic.dataclasses import dataclass
 
 from mdrsclient.api.base import BaseApi
@@ -27,7 +27,7 @@ class UserApi(BaseApi):
         if response.status_code == requests.codes.unauthorized:
             raise UnauthorizedException("Invalid username or password.")
         self._raise_response_error(response)
-        obj = parse_obj_as(UserAuthResponse, response.json())
+        obj = TypeAdapter(UserAuthResponse).validate_python(response.json())
         token = Token(access=obj.access, refresh=obj.refresh)
         laboratory_ids = [obj.lab_id] if obj.lab_id is not None else []
         is_reviewer = obj.is_reviewer if obj.is_reviewer is not None else False
@@ -42,5 +42,5 @@ class UserApi(BaseApi):
         if response.status_code == requests.codes.unauthorized:
             raise UnauthorizedException("Token is invalid or expired.")
         self._raise_response_error(response)
-        token = parse_obj_as(Token, response.json())
+        token = TypeAdapter(Token).validate_python(response.json())
         return token
diff --git a/mdrsclient/cache.py b/mdrsclient/cache.py
index d9ee219..967d981 100644
--- a/mdrsclient/cache.py
+++ b/mdrsclient/cache.py
@@ -3,9 +3,8 @@ import hashlib
 import json
 import os
 
-from pydantic import ValidationError
+from pydantic import TypeAdapter, ValidationError
 from pydantic.dataclasses import dataclass
-from pydantic.tools import parse_obj_as
 
 from mdrsclient.exceptions import UnexpectedException
 from mdrsclient.models import Laboratories, Token, User
@@ -108,7 +107,7 @@ class CacheFile:
             if self.__serial != serial:
                 try:
                     with open(self.__cache_file) as f:
-                        data = parse_obj_as(CacheData, json.load(f))
+                        data = TypeAdapter(CacheData).validate_python(json.load(f))
                         if not data.verify_digest():
                             raise UnexpectedException("Cache data has been broken.")
                         self.__data = data
diff --git a/mdrsclient/commands/mkdir.py b/mdrsclient/commands/mkdir.py
index cfb0d4f..6bca9d6 100644
--- a/mdrsclient/commands/mkdir.py
+++ b/mdrsclient/commands/mkdir.py
@@ -1,5 +1,6 @@
 import os
 from argparse import Namespace, _SubParsersAction
+from unicodedata import normalize
 
 from mdrsclient.api import FolderApi
 from mdrsclient.commands.base import BaseCommand
@@ -25,4 +26,4 @@ class MkdirCommand(BaseCommand):
         if parent_folder.find_sub_folder(r_basename) is not None or parent_folder.find_file(r_basename) is not None:
             raise IllegalArgumentException(f"Cannot create folder `{r_path}`: File exists.")
         folder_api = FolderApi(connection)
-        folder_api.create(r_basename, parent_folder.id)
+        folder_api.create(normalize("NFC", r_basename), parent_folder.id)
diff --git a/mdrsclient/commands/mv.py b/mdrsclient/commands/mv.py
index 8d3bf75..ff89604 100644
--- a/mdrsclient/commands/mv.py
+++ b/mdrsclient/commands/mv.py
@@ -3,7 +3,7 @@ import os
 from argparse import Namespace, _SubParsersAction
 from unicodedata import normalize
 
-from pydantic import parse_obj_as
+from pydantic import TypeAdapter
 
 from mdrsclient.api import FileApi, FolderApi
 from mdrsclient.commands.base import BaseCommand
@@ -52,7 +52,7 @@ class MvCommand(BaseCommand):
             file_api = FileApi(connection)
             if s_parent_folder.id != d_parent_folder.id or d_basename != s_basename:
                 d_file_dict = dataclasses.asdict(s_file) | {"name": normalize("NFC", d_basename)}
-                d_file = parse_obj_as(File, d_file_dict)
+                d_file = TypeAdapter(File).validate_python(d_file_dict)
                 file_api.move(d_file, d_parent_folder.id)
         else:
             s_folder = s_parent_folder.find_sub_folder(s_basename)
@@ -71,5 +71,5 @@ class MvCommand(BaseCommand):
                 folder_api.move(s_folder, d_parent_folder.id)
             if s_basename != d_basename:
                 d_folder_dict = dataclasses.asdict(s_folder) | {"name": normalize("NFC", d_basename)}
-                d_folder = parse_obj_as(FolderSimple, d_folder_dict)
+                d_folder = TypeAdapter(FolderSimple).validate_python(d_folder_dict)
                 folder_api.update(d_folder)
diff --git a/mdrsclient/models/user.py b/mdrsclient/models/user.py
index a968a52..eff7753 100644
--- a/mdrsclient/models/user.py
+++ b/mdrsclient/models/user.py
@@ -1,7 +1,7 @@
 import time
 
 import jwt
-from pydantic import parse_obj_as
+from pydantic import TypeAdapter
 from pydantic.dataclasses import dataclass
 
 
@@ -39,7 +39,7 @@ class Token:
 
     def __decode(self, token: str) -> DecodedJWT:
         data = jwt.decode(token, options={"verify_signature": False})
-        return parse_obj_as(DecodedJWT, data)
+        return TypeAdapter(DecodedJWT).validate_python(data)
 
 
 @dataclass(frozen=True)