diff --git a/requirements.txt b/requirements.txt
index dd9f161..b1c0ef9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -31,7 +31,7 @@ grpcio==1.21.1
 gunicorn==19.9.0
 gym==0.13.0
 h5py==2.9.0
-httplib2==0.13.0
+httplib2==0.18.0
 idna==2.8
 intervaltree==3.0.2
 ipython==7.6.0