diff --git a/test-requirements.txt b/test-requirements.txt
index c7ee582..672f615 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -9,7 +9,7 @@ requests>=2.10.0 # Apache-2.0
 ndg-httpsclient>=0.4.2;python_version<'3.0' # BSD
 
 # this is required for the docs build jobs
-sphinx!=1.3b1,<1.3,>=1.2.1 # BSD
+sphinx!=1.3b1,<1.4,>=1.2.1 # BSD
 oslosphinx>=4.7.0 # Apache-2.0
 doc8 # Apache-2.0
 reno>=1.8.0 # Apache2