diff --git a/poetry.lock b/poetry.lock
index dc0b527f..2e9e5611 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -784,7 +784,7 @@ reference = "aliyun"
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.7"
-content-hash = "55439e671ff8c89285f2cf645189c1bf3e3bd53638bbb31ed505727a041d1012"
+content-hash = "0038c5b3aa4a382184c1ef5b37a668ce37d8246c8fdf18deb71dccc8bf97be62"
 
 [metadata.files]
 alabaster = [
diff --git a/pyproject.toml b/pyproject.toml
index 23f8e799..87a5e573 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -30,6 +30,7 @@ pygtrie = "^2.4.1"
 fastapi = "^0.63.0"
 uvicorn = "^0.11.5"
 pydantic = {extras = ["dotenv", "typing_extensions"], version = "^1.7.3"}
+websockets = "^8.1"
 
 [tool.poetry.dev-dependencies]
 yapf = "^0.30.0"