diff --git a/api/kiwi_vpn_api/config.py b/api/kiwi_vpn_api/config.py
index a8a2232..c5fab27 100644
--- a/api/kiwi_vpn_api/config.py
+++ b/api/kiwi_vpn_api/config.py
@@ -3,7 +3,6 @@ from __future__ import annotations
 import json
 from enum import Enum
 from pathlib import Path
-from typing import Optional
 
 from fastapi import Depends
 from jose.constants import ALGORITHMS
@@ -37,7 +36,7 @@ class DBConfig(BaseModel):
 
 
 class JWTConfig(BaseModel):
-    secret: Optional[str] = None
+    secret: str | None = None
     hash_algorithm: str = ALGORITHMS.HS256
     expiry_minutes: int = 30
 
diff --git a/api/kiwi_vpn_api/routers/user.py b/api/kiwi_vpn_api/routers/user.py
index 9409fa4..eae9636 100644
--- a/api/kiwi_vpn_api/routers/user.py
+++ b/api/kiwi_vpn_api/routers/user.py
@@ -1,6 +1,5 @@
 from __future__ import annotations
 
-from typing import Optional
 
 from fastapi import APIRouter, Depends, HTTPException, status
 from jose import JWTError, jwt
@@ -18,7 +17,7 @@ class User(BaseModel):
     capabilities: list[str]
 
     @classmethod
-    def from_db(cls, username: str) -> Optional[User]:
+    def from_db(cls, username: str) -> User | None:
         user = db_User.get_by_name(username)
 
         if not user: