diff --git a/requirements.txt b/requirements.txt
index d18532c..508bc6a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -25,7 +25,7 @@ google-api-python-client==1.7.8
 google-auth==1.6.3
 google-auth-httplib2==0.0.3
 gunicorn==19.9.0
-httplib2==0.12.1
+httplib2==0.18.0
 idna==2.8
 ipykernel==5.1.0
 ipython==7.3.0