diff --git a/requirements.txt b/requirements.txt
index 6bebed6..4836525 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -201,7 +201,7 @@ vega==0.4.4
 vincent==0.4.4
 wcwidth==0.1.7
 webencodings==0.5
-websockets==4.0.1
+websockets==9.1
 Werkzeug==0.14.1
 widgetsnbextension==3.1.0
 wordcloud==1.4.1