diff --git a/requirements.txt b/requirements.txt
index fad5dba..7f4a7c6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ aiohttp-security==0.4.0
 jinja2==2.10.3
 pyyaml>=5.1
 cryptography>=3.2
-websockets==8.1
+websockets==9.1
 Sphinx==3.0.4
 sphinx_rtd_theme==0.4.3
 recommonmark==0.6.0