diff --git a/requirements.txt b/requirements.txt
index 1b97483..c07747b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,7 +12,7 @@ gcloud==0.17.0
 googleapis-common-protos==1.6.0
 gunicorn==19.9.0
 honeybadger==0.2.0
-httplib2==0.13.1
+httplib2==0.18.0
 idna==2.8
 jws==0.1.3
 mock==3.0.5