diff --git a/requirements.txt b/requirements.txt
index 57cf618..4e720b9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,7 +14,7 @@ google-cloud-storage==1.12.0
 google-resumable-media==0.3.1
 googleapis-common-protos==1.5.3
 grpcio==1.15.0
-httplib2==0.18.0
+httplib2==0.19.0
 idna==2.7
 itsdangerous==0.24
 Jinja2==2.10