diff --git a/test-requirements.txt b/test-requirements.txt
index 02fea7fc6..831295573 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -14,7 +14,7 @@ python-novaclient!=7.0.0,>=6.0.0 # Apache-2.0
 python-heatclient>=1.6.1 # Apache-2.0
 python-subunit>=0.0.18 # Apache-2.0/BSD
 pyzabbix>=0.7.4 # LGPL
-sphinx!=1.3b1,<1.4,>=1.2.1 # BSD
+sphinx>=1.5.1 # BSD
 oslo.log>=3.11.0 # Apache-2.0
 oslosphinx>=4.7.0 # Apache-2.0
 oslotest>=1.10.0 # Apache-2.0