diff --git a/lower-constraints.txt b/lower-constraints.txt
index 47f8a0c0e0..bcd7215bdb 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -49,6 +49,7 @@ python-ldap===3.0.0
 pymongo===3.0.2
 pysaml2==4.5.0
 PyJWT==1.6.1
+PyMySQL==0.7.6
 python-keystoneclient==3.8.0
 python-memcached===1.56
 pytz==2013.6