diff --git a/requirements.txt b/requirements.txt
index 5c2d657..1b7565e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -26,7 +26,7 @@ google-pasta==0.1.7
 grpcio==1.21.1
 h5py==2.9.0
 html5lib==1.0.1
-httplib2==0.13.0
+httplib2==0.19.0
 hyperlink==19.0.0
 idna==2.7
 incremental==17.5.0