diff --git a/requirements.txt b/requirements.txt
index bcdbc3e..47ab4be 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -167,7 +167,7 @@ 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
 wptools==0.4.7