diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index 858e46e..e1bc9a2
--- a/requirements.txt
+++ b/requirements.txt
@@ -43,7 +43,7 @@ google-resumable-media==0.3.2
 googleapis-common-protos==1.6.0
 googlemaps==3.1.3
 gunicorn==19.9.0
-httplib2==0.11.3
+httplib2==0.19.0
 idna==2.6
 infinity==1.4
 intervals==0.8.1