diff --git a/samples/stamp/atos/functional/template/citygo/requirements.txt b/samples/stamp/atos/functional/template/citygo/requirements.txt
index 7dc8d06b..1fe23d09 100644
--- a/samples/stamp/atos/functional/template/citygo/requirements.txt
+++ b/samples/stamp/atos/functional/template/citygo/requirements.txt
@@ -2,7 +2,7 @@ Django==1.10.2
 django-allauth==0.27.0
 django-rest-auth==0.8.1
 djangorestframework==3.4.7
-httplib2==0.9.2
+httplib2==0.18.0
 oauth2==1.9.0.post1
 oauthlib==2.0.0
 psycopg2-binary