diff --git a/requirements.txt b/requirements.txt
index 30a1169..656165e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -27,7 +27,7 @@ graphviz==0.13
 grpcio==1.24.1
 gym==0.15.3
 h5py==2.10.0
-httplib2==0.9.2
+httplib2==0.19.0
 idna==2.6
 imageio==2.6.1
 interaction==1.3