diff --git a/requirements.txt b/requirements.txt
index fa28f4a..b0b7b16 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -29,7 +29,7 @@ google-auth-httplib2==0.0.3
 graphviz==0.8.4
 grpcio==1.20.1
 h5py==2.9.0
-httplib2==0.18.0
+httplib2==0.19.0
 idna==2.8
 imageio==2.5.0
 imgaug==0.2.8