diff --git a/fastapi_server/requirements.txt b/fastapi_server/requirements.txt
index 1a6ea51..d05ff1d 100644
--- a/fastapi_server/requirements.txt
+++ b/fastapi_server/requirements.txt
@@ -7,4 +7,4 @@ pydantic==1.4
 starlette==0.13.2
 uvicorn==0.11.3
 uvloop==0.14.0
-websockets==8.1
+websockets==9.1