diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 1f6adac7..cddfc6c3 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -7,7 +7,7 @@ ci:
   autoupdate_commit_msg: ":arrow_up: auto update by pre-commit hooks"
 repos:
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.15.20
+    rev: v0.16.1
     hooks:
       - id: ruff-check
         args: [--fix]
diff --git a/nonebot/drivers/websockets.py b/nonebot/drivers/websockets.py
index 0eb8a2de..0580d6ee 100644
--- a/nonebot/drivers/websockets.py
+++ b/nonebot/drivers/websockets.py
@@ -77,7 +77,7 @@ class Mixin(WebSocketClientMixin):
     @override
     @asynccontextmanager
     async def websocket(self, setup: Request) -> AsyncGenerator["WebSocket", None]:
-        timeout_kwargs: dict[str, float | None | UnsetType] = {}
+        timeout_kwargs: dict[str, float | UnsetType | None] = {}
         if isinstance(setup.timeout, Timeout):
             open_timeout = (
                 setup.timeout.connect or setup.timeout.read or setup.timeout.total