diff --git a/appengine/flexible/websockets/requirements-test.txt b/appengine/flexible/websockets/requirements-test.txt
index e99f61902f7e..50d54b14893c 100644
--- a/appengine/flexible/websockets/requirements-test.txt
+++ b/appengine/flexible/websockets/requirements-test.txt
@@ -1,3 +1,3 @@
 pytest==5.4.3
 retrying==1.3.3
-websocket-client==0.56.0
+websocket-client==0.57.0