diff --git a/compose.dev.yml b/compose.dev.yml
index 24dd535..49e71b9 100644
--- a/compose.dev.yml
+++ b/compose.dev.yml
@@ -19,10 +19,10 @@ services:
       - SAPPORO_DEBUG=True
       - SAPPORO_RUN_DIR=${PWD}/run
     ports:
-      - 127.0.0.1:1122:1122
+      - 127.0.0.1:1123:1122
     restart: on-failure
     working_dir: /app
-    command: ["sleep", "infinity"]
+    command: [ "sleep", "infinity" ]
     networks:
       - sapporo-dev-network
 
diff --git a/sapporo/app.py b/sapporo/app.py
index 4fe9141..b771082 100644
--- a/sapporo/app.py
+++ b/sapporo/app.py
@@ -10,8 +10,7 @@
 from fastapi.responses import JSONResponse
 from starlette.datastructures import Headers, MutableHeaders
 from starlette.exceptions import HTTPException as StarletteHTTPException
-from starlette.responses import PlainTextResponse, Response
-from starlette.types import ASGIApp, Message, Receive, Scope, Send
+from starlette.types import Message, Receive, Scope, Send
 
 from sapporo.auth import get_auth_config
 from sapporo.config import (LOGGER, PKG_DIR, add_openapi_info, get_config,