diff --git a/app/requirements.txt b/app/requirements.txt
index 5bd1ce5..9d636fc 100644
--- a/app/requirements.txt
+++ b/app/requirements.txt
@@ -1,4 +1,4 @@
     aiomqtt==2.3.2
     schema==0.7.7
     aiocron==2.1
-    aiohttp==3.11.16
\ No newline at end of file
+    quart==0.20
\ No newline at end of file
diff --git a/app/src/proxy.py b/app/src/proxy.py
index 8c935f7..afb06f3 100644
--- a/app/src/proxy.py
+++ b/app/src/proxy.py
@@ -96,8 +96,8 @@ class Proxy():
             Infos.new_stat_data[key] = False
 
     @classmethod
-    def class_close(cls, loop) -> None:   # pragma: no cover
+    async def class_close(cls, loop) -> None:   # pragma: no cover
         logging.debug('Proxy.class_close')
         logging.info('Close MQTT Task')
-        loop.run_until_complete(cls.mqtt.close())
+        await cls.mqtt.close()
         cls.mqtt = None
diff --git a/app/src/server.py b/app/src/server.py
index 6056eb9..f78a38d 100644
--- a/app/src/server.py
+++ b/app/src/server.py
@@ -1,11 +1,10 @@
 import logging
 import asyncio
 import logging.handlers
-import signal
 import os
 import argparse
 from asyncio import StreamReader, StreamWriter
-from aiohttp import web
+from quart import Quart, Response
 from logging import config  # noqa F401
 from proxy import Proxy
 from inverter_ifc import InverterIfc
@@ -18,28 +17,29 @@ from cnf.config_read_toml import ConfigReadToml
 from cnf.config_read_json import ConfigReadJson
 from modbus_tcp import ModbusTcp
 
-routes = web.RouteTableDef()
 proxy_is_up = False
 
-
-@routes.get('/')
-async def hello(request):
-    return web.Response(text="Hello, world")
+app = Quart(__name__)
 
 
-@routes.get('/-/ready')
-async def ready(request):
+@app.route('/')
+async def hello():
+    return Response(response="Hello, world")
+
+
+@app.route('/-/ready')
+async def ready():
     if proxy_is_up:
         status = 200
         text = 'Is ready'
     else:
         status = 503
         text = 'Not ready'
-    return web.Response(status=status, text=text)
+    return Response(status=status, response=text)
 
 
-@routes.get('/-/healthy')
-async def healthy(request):
+@app.route('/-/healthy')
+async def healthy():
 
     if proxy_is_up:
         # logging.info('web reqeust healthy()')
@@ -47,32 +47,11 @@ async def healthy(request):
             try:
                 res = inverter.healthy()
                 if not res:
-                    return web.Response(status=503, text="I have a problem")
+                    return Response(status=503, response="I have a problem")
             except Exception as err:
                 logging.info(f'Exception:{err}')
 
-    return web.Response(status=200, text="I'm fine")
-
-
-async def webserver(addr, port):
-    '''coro running our webserver'''
-    app = web.Application()
-    app.add_routes(routes)
-    runner = web.AppRunner(app)
-
-    await runner.setup()
-    site = web.TCPSite(runner, addr, port)
-    await site.start()
-    logging.info(f'HTTP server listen on port: {port}')
-
-    try:
-        # Normal interaction with aiohttp
-        while True:
-            await asyncio.sleep(3600)  # sleep forever
-    except asyncio.CancelledError:
-        logging.info('HTTP server cancelled')
-        await runner.cleanup()
-        logging.debug('HTTP cleanup done')
+    return Response(status=200, response="I'm fine")
 
 
 async def handle_client(reader: StreamReader, writer: StreamWriter, inv_class):
@@ -82,10 +61,12 @@ async def handle_client(reader: StreamReader, writer: StreamWriter, inv_class):
         await inv.local.ifc.server_loop()
 
 
-async def handle_shutdown(loop, web_task):
+@app.after_serving
+async def handle_shutdown():
     '''Close all TCP connections and stop the event loop'''
 
     logging.info('Shutdown due to SIGTERM')
+    loop = asyncio.get_event_loop()
     global proxy_is_up
     proxy_is_up = False
 
@@ -97,24 +78,16 @@ async def handle_shutdown(loop, web_task):
 
     logging.info('Proxy disconnecting done')
 
-    #
-    # second, cancel the web server
-    #
-    web_task.cancel()
-    await web_task
-
     #
     # now cancel all remaining (pending) tasks
     #
-    pending = asyncio.all_tasks()
-    for task in pending:
+    for task in asyncio.all_tasks():
+        if task == asyncio.current_task():
+            continue
         task.cancel()
+    logging.info('Proxy cancelling done')
 
-    #
-    # at last, start a coro for stopping the loop
-    #
-    logging.debug("Stop event loop")
-    loop.stop()
+    await Proxy.class_close(loop)
 
 
 def get_log_level() -> int | None:
@@ -214,27 +187,21 @@ def main():   # pragma: no cover
         loop.create_task(asyncio.start_server(lambda r, w, i=inv_class:
                                               handle_client(r, w, i),
                                               '0.0.0.0', port))
-    web_task = loop.create_task(webserver('0.0.0.0', 8127))
-
-    #
-    # Register some UNIX Signal handler for a gracefully server shutdown
-    # on Docker restart and stop
-    #
-    for signame in ('SIGINT', 'SIGTERM'):
-        loop.add_signal_handler(getattr(signal, signame),
-                                lambda loop=loop: asyncio.create_task(
-                                    handle_shutdown(loop, web_task)))
 
     loop.set_debug(log_level == logging.DEBUG)
     try:
         global proxy_is_up
         proxy_is_up = True
-        loop.run_forever()
+        logging.info("Start Quart")
+        app.run(host='0.0.0.0', port=8127, use_reloader=False, loop=loop)
+        logging.info("Quart stopped")
+
     except KeyboardInterrupt:
         pass
+    except asyncio.exceptions.CancelledError:
+        logging.info("Quart cancelled")
+
     finally:
-        logging.info("Event loop is stopped")
-        Proxy.class_close(loop)
         logging.debug('Close event loop')
         loop.close()
         logging.info(f'Finally, exit Server "{serv_name}"')