diff --git a/test-requirements.txt b/test-requirements.txt
index 089eda4..98ef4fa 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -9,5 +9,5 @@ coverage>=4.0 # Apache-2.0
 
 # These are needed for docs generation
 oslosphinx>=4.7.0 # Apache-2.0
-sphinx!=1.3b1,<1.4,>=1.2.1 # BSD
+sphinx>=1.5.1 # BSD
 reno>=1.8.0 # Apache-2.0