diff --git a/requirements.txt b/requirements.txt
index 8c9eb89..14361a4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,5 @@
 nonebot2[fastapi]
-nonebot-adapter-onebot==2.4.1
\ No newline at end of file
+nonebot-adapter-onebot==2.4.1
+pydantic==1.10.8
+yaml==0.2.5
+pyyaml==6.0
\ No newline at end of file
diff --git a/src/liteyuki.py b/src/liteyuki.py
index f932cb7..7f985f2 100644
--- a/src/liteyuki.py
+++ b/src/liteyuki.py
@@ -3,7 +3,6 @@ import nonebot
 from nonebot import DOTENV_TYPE
 from nonebot.adapters.onebot.v11 import Adapter as OnebotV11Adapter
 from nonebot.adapters.onebot.v12 import Adapter as OnebotV12Adapter
-from sqlalchemy import create_engine
 
 from src.api.utils import load_config