diff --git a/pyproject.toml b/pyproject.toml
index e687af6..20d50ec 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -18,7 +18,7 @@ aiofiles = ">=24.0.0"
 nonebot-plugin-apscheduler = "^0.5.0"
 nonebot-adapter-onebot = "^2.0.0"
 nonebot-plugin-localstore = "^0.7.3"
-mcp = ">=1.24.0"
+mcp = ">=1.24.0,<2.0.0"
 
 [tool.poetry.group.dev.dependencies]
 ruff = "^0.8.0"