diff --git a/whisper_cpp_python/server/__main__.py b/whisper_cpp_python/server/__main__.py
index ab88931..dac8195 100644
--- a/whisper_cpp_python/server/__main__.py
+++ b/whisper_cpp_python/server/__main__.py
@@ -17,28 +17,40 @@
 
 """
 import os
-import uvicorn
+import uvicorn 
 import argparse
+from typing import get_type_hints
 
 from whisper_cpp_python.server.app import create_app, Settings
 
 if __name__ == "__main__":
+
     parser = argparse.ArgumentParser()
-    for name, field in Settings.__fields__.items():
-        description = field.field_info.description
+
+    for name, field in Settings.model_fields.items():
+        
+        # Get field type 
+        field_type = get_type_hints(Settings)[name]  
+        
+        description = field.description
         if field.default is not None and description is not None:
             description += f" (default: {field.default})"
+
         parser.add_argument(
             f"--{name}",
             dest=name,
-            type=field.type_,
-            help=description,
+            type=field_type, # Use field type here
+            help=description
         )
 
     args = parser.parse_args()
+    
     settings = Settings(**{k: v for k, v in vars(args).items() if v is not None})
+
     app = create_app(settings=settings)
 
     uvicorn.run(
-        app, host=os.getenv("HOST", "localhost"), port=int(os.getenv("PORT", 8001))
-    )
+        app, 
+        host=os.getenv("HOST", "localhost"),
+        port=int(os.getenv("PORT", 8001))
+    )
\ No newline at end of file
diff --git a/whisper_cpp_python/server/app.py b/whisper_cpp_python/server/app.py
index 0efa5d8..acb3bc1 100644
--- a/whisper_cpp_python/server/app.py
+++ b/whisper_cpp_python/server/app.py
@@ -9,7 +9,9 @@
 
 from fastapi import Depends, FastAPI, APIRouter, File, Body
 from fastapi.middleware.cors import CORSMiddleware
-from pydantic import BaseModel, BaseSettings, Field
+
+from pydantic import BaseModel, Field
+from pydantic_settings import BaseSettings
 from sse_starlette.sse import EventSourceResponse