diff --git a/requirements.txt b/requirements.txt
index 414cd66..a2df6c2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,7 +15,7 @@ google-cloud-storage==1.11.0
 google-resumable-media==0.3.1
 googleapis-common-protos==1.5.5
 grpcio==1.16.1
-httplib2==0.12.0
+httplib2==0.19.0
 idna==2.7
 itsdangerous==1.1.0
 Jinja2==2.10