diff --git a/src/announce_server/client.py b/src/announce_server/client.py
index 5a327d1..292e9c3 100644
--- a/src/announce_server/client.py
+++ b/src/announce_server/client.py
@@ -1,12 +1,13 @@
-import asyncio
 import argparse
+import asyncio
 import signal
 import threading
-
 from http.server import HTTPServer, SimpleHTTPRequestHandler
+
+import socketio
+
 from .decorator import register_service
 from .get_ip import get_ip_address
-import socketio
 
 sio = socketio.AsyncClient()
 
@@ -99,10 +100,17 @@ def exit_handler(sig, frame):
 #     except (KeyboardInterrupt, asyncio.exceptions.CancelledError):
 #         print("Cleaning up and shutting down...")
 
+
 def start_client(host_ip="0.0.0.0", host_port=4999):
-    @register_service(name="test client", ip=get_ip_address(), port=13373, host_ip=host_ip, host_port=host_port)
+    @register_service(
+        name="test client",
+        ip=get_ip_address(),
+        port=13373,
+        host_ip=host_ip,
+        host_port=host_port,
+    )
     def server(port=13373):
-        httpd = HTTPServer(('', port), SimpleHTTPRequestHandler)
+        httpd = HTTPServer(("", port), SimpleHTTPRequestHandler)
         print(f"Serving HTTP on 0.0.0.0 port {port} (http://0.0.0.0:{port}/) ...")
 
         def serve_forever_nonblocking():
@@ -121,7 +129,6 @@ def start_client(host_ip="0.0.0.0", host_port=4999):
     signal.signal(signal.SIGINT, exit_handler)
     signal.signal(signal.SIGTERM, exit_handler)
 
-
     try:
         server_thread = server()
         asyncio.run(main(host_ip, host_port))
diff --git a/src/announce_server/server.py b/src/announce_server/server.py
index 0e6a45a..1697dd1 100644
--- a/src/announce_server/server.py
+++ b/src/announce_server/server.py
@@ -143,7 +143,7 @@ def start_server(address, port, heartbeat_interval, heartbeat_timeout):
     #     heartbeat(sio, heartbeat_interval, heartbeat_timeout)
     # )
     # aiohttp_app = loop.create_task(web._run_app(app, host=address, port=port))
-    
+
     # Python 3.6+ compatible. Supports any awaitable:
     heartbeat_task = asyncio.ensure_future(
         heartbeat(sio, heartbeat_interval, heartbeat_timeout)
@@ -166,10 +166,8 @@ def start_server(address, port, heartbeat_interval, heartbeat_timeout):
 
 if __name__ == "__main__":
     parser = argparse.ArgumentParser(description="Start announce_server client.")
- 
-    parser.add_argument(
-        "--ip", default="0.0.0.0", help="IP address of the host server"
-    )
+
+    parser.add_argument("--ip", default="0.0.0.0", help="IP address of the host server")
     parser.add_argument(
         "--port", default=4999, type=int, help="Port of the host server"
     )
@@ -185,7 +183,7 @@ if __name__ == "__main__":
         type=float,
         help="Heartbeat timeout in seconds",
     )
-    
+
     args = parser.parse_args()
 
     start_server(