diff --git a/__init__.py b/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/handlers/health.py b/handlers/health.py
index 8d63173..404e1f3 100644
--- a/handlers/health.py
+++ b/handlers/health.py
@@ -2,7 +2,7 @@
 
 from aiohttp import web
 
-from response import ok
+from ..response import ok
 
 
 async def health_handler(request: web.Request) -> web.Response:
diff --git a/handlers/message.py b/handlers/message.py
index e84423a..6fc19f5 100644
--- a/handlers/message.py
+++ b/handlers/message.py
@@ -4,8 +4,8 @@ import asyncio
 
 from aiohttp import web
 
-from config import QQ_API_MAX_RETRIES, QQ_API_TIMEOUT
-from response import error, ok
+from ..config import QQ_API_MAX_RETRIES, QQ_API_TIMEOUT
+from ..response import error, ok
 
 VALID_MSG_TYPES = {"text", "image", "file", "video"}
 
diff --git a/handlers/upload.py b/handlers/upload.py
index 4a7c2c9..282aa48 100644
--- a/handlers/upload.py
+++ b/handlers/upload.py
@@ -7,8 +7,8 @@ from pathlib import Path
 
 from aiohttp import BodyPartReader, web
 
-from config import ALLOWED_EXTENSIONS, MAX_UPLOAD_SIZE, UPLOAD_DIR
-from response import error, ok
+from ..config import ALLOWED_EXTENSIONS, MAX_UPLOAD_SIZE, UPLOAD_DIR
+from ..response import error, ok
 
 logger = logging.getLogger("webhook-plugin.upload")
 
diff --git a/middleware.py b/middleware.py
index 0a0c149..dba4e91 100644
--- a/middleware.py
+++ b/middleware.py
@@ -4,8 +4,8 @@ import uuid
 
 from aiohttp import web
 
-from config import WEBHOOK_API_KEY
-from response import error
+from .config import WEBHOOK_API_KEY
+from .response import error
 
 
 @web.middleware
diff --git a/plugin.py b/plugin.py
index d0eb8f4..ea8a0f1 100644
--- a/plugin.py
+++ b/plugin.py
@@ -6,11 +6,11 @@ import logging
 from aiohttp import web
 from ncatbot.plugin import NcatBotPlugin
 
-from config import HOST, PORT, UPLOAD_DIR, WEBHOOK_API_KEY
-from handlers.health import health_handler
-from handlers.message import webhook_handler
-from handlers.upload import cleanup_expired_files, upload_handler
-from middleware import auth_middleware, request_id_middleware
+from .config import HOST, PORT, UPLOAD_DIR, WEBHOOK_API_KEY
+from .handlers.health import health_handler
+from .handlers.message import webhook_handler
+from .handlers.upload import cleanup_expired_files, upload_handler
+from .middleware import auth_middleware, request_id_middleware
 
 logging.basicConfig(
     level=logging.INFO,