diff --git a/requirements.txt b/requirements.txt
index 72108c9..aa0f991 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,7 +11,7 @@ google-api-python-client==1.7.9
 google-auth==1.6.3
 google-auth-httplib2==0.0.3
 gunicorn==19.9.0
-httplib2==0.13.0
+httplib2==0.19.0
 idna==2.8
 itsdangerous==1.1.0
 Jinja2==2.10.1