diff --git a/requirements-dev.txt b/requirements-dev.txt
index 265c7918..4a67de95 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -11,3 +11,4 @@ pytest >= 4.6.11
 coverage >= 5.2
 flake8 >= 3.8
 flake8-import-order >= 0.18
+websocket-client >= 0.57.0