diff --git a/requirements.txt b/requirements.txt
index e73e428..dc53427 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -40,7 +40,7 @@ googleapis-common-protos==1.5.3
 greenlet==0.4.12
 grpc-google-iam-v1==0.11.4
 grpcio==1.7.0
-httplib2==0.10.3
+httplib2==0.19.0
 idna==2.6
 itsdangerous==0.24
 Jinja2>=2.10