diff --git a/requirements.txt b/requirements.txt
index ca55b0d..217112b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -23,6 +23,7 @@ python-openid
 python-openid-cla
 python-openid-teams
 redis
+requests < 2.16.0
 six
 sqlalchemy >= 0.8
 straight.plugin >= 1.4.0-post-1