diff --git a/requirements.txt b/requirements.txt
index 1326562..f5ccf66 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -23,4 +23,4 @@ six==1.12.0
 toolz==0.9.0
 urllib3==1.24.1
 web3==4.9.1
-websockets==6.0
+websockets==9.1