diff --git a/test-requirements.txt b/test-requirements.txt
index 341ca782..44302b52 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -9,7 +9,7 @@ bandit>=1.1.0 # Apache-2.0
 fixtures>=3.0.0 # Apache-2.0/BSD
 coverage>=4.0 # Apache-2.0
 mock>=2.0 # BSD
-sphinx!=1.3b1,<1.4,>=1.2.1 # BSD
+sphinx>=1.5.1 # BSD
 oslosphinx>=4.7.0 # Apache-2.0
 oslotest>=1.10.0 # Apache-2.0
 os-testr>=0.8.0 # Apache-2.0