diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index f1645cb..edff359
--- a/requirements.txt
+++ b/requirements.txt
@@ -22,7 +22,7 @@ gevent==1.0.1
 gevent-websocket==0.9.3
 greenlet==0.4.4
 gunicorn==19.1.1
-httplib2==0.9
+httplib2==0.18.0
 itsdangerous==0.24
 nose==1.3.4
 oauth2==1.5.211