diff --git a/nailgun/requirements.txt b/nailgun/requirements.txt
index aca1af3be3..5fe1bcbd41 100644
--- a/nailgun/requirements.txt
+++ b/nailgun/requirements.txt
@@ -22,7 +22,7 @@ oslo.db>2.4.1
 ply>=3.4
 psycopg2>=2.5.1
 pycrypto>=2.6.1
-requests>=2.5.2,!=2.8.0
+requests>=2.5.2,!=2.8.0,!=2.9.0
 simplejson>=3.3.0
 six>=1.9.0
 urllib3>=1.8.3