diff --git a/requirements.txt b/requirements.txt
index 17c0477..ba3fd03 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -26,7 +26,7 @@ Flask-Session==0.3.1
 funcsigs==1.0.2
 futures==3.1.1
 gunicorn==19.7.1
-httplib2==0.10.3
+httplib2==0.18.0
 idna==2.5
 ipaddress==1.0.18
 itsdangerous==0.24