diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index 801e586..de54b40
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ elasticsearch-dsl==5.1.0
 Flask==0.12
 Flask-Login==0.4.0
 Flask-OAuth==0.12
-httplib2==0.10.3
+httplib2==0.19.0
 itsdangerous==0.24
 Jinja2==2.9.5
 MarkupSafe==0.23