diff --git a/test-requirements.txt b/test-requirements.txt
index 3d337a7..875421c 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -10,7 +10,7 @@ fixtures>=3.0.0 # Apache-2.0/BSD
 
 # These are needed for docs generation
 oslosphinx>=4.7.0 # Apache-2.0
-sphinx!=1.3b1,<1.3,>=1.2.1 # BSD
+sphinx!=1.3b1,<1.4,>=1.2.1 # BSD
 reno>=1.8.0 # Apache2
 
 eventlet!=0.18.3,>=0.18.2 # MIT