diff --git a/websocket_server/requirements.txt b/websocket_server/requirements.txt
index d343437..4b5d8c3 100644
--- a/websocket_server/requirements.txt
+++ b/websocket_server/requirements.txt
@@ -15,7 +15,7 @@ google-auth-oauthlib==0.4.1
 googleapis-common-protos==1.51.0
 greenlet==0.4.15
 gunicorn==20.0.4
-httplib2==0.18.0
+httplib2==0.19.0
 idna==2.9
 itsdangerous==1.1.0
 Jinja2==2.11.2