diff --git a/requirements.txt b/requirements.txt
index 9c366ee..964c18a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -31,7 +31,7 @@ gast==0.3.1
 google-pasta==0.1.7
 grpcio==1.23.0
 h5py==2.10.0
-httplib2==0.9.2
+httplib2==0.18.0
 hyperlink==17.3.1
 idna==2.6
 incremental==16.10.1