diff --git a/upper-constraints-xfails.txt b/upper-constraints-xfails.txt
index e5efdbb678..f5d14b92b9 100644
--- a/upper-constraints-xfails.txt
+++ b/upper-constraints-xfails.txt
@@ -3,4 +3,3 @@
 
 pyparsing==2.1.10;pulp
 psutil==5.1.3;os-refresh-config
-Sphinx==1.5.2;os-api-ref,openstack-doc-tools