diff --git a/app/core/config.py b/app/core/config.py
index 88788ef..6c6cc97 100644
--- a/app/core/config.py
+++ b/app/core/config.py
@@ -1,5 +1,5 @@
 from pathlib import Path
-from typing import List
+from typing import ClassVar, List
 
 from pydantic_settings import BaseSettings
 
@@ -17,7 +17,7 @@ class Settings(BaseSettings):
     CORS_ORIGINS: List[str] = ["http://localhost:3000", "http://localhost:8000"]
 
     # Database
-    DB_DIR = Path("/app/storage/db")
+    DB_DIR: ClassVar[Path] = Path("/app/storage/db")
     DB_DIR.mkdir(parents=True, exist_ok=True)
     SQLALCHEMY_DATABASE_URL: str = f"sqlite:///{DB_DIR}/db.sqlite"