diff --git a/test-requirements.txt b/test-requirements.txt
index 2ba9087..f2c8d6d 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -14,4 +14,4 @@ testtools>=1.4.0 # MIT
 
 # this is required for the docs build jobs
 oslosphinx>=4.7.0 # Apache-2.0
-sphinx!=1.3b1,<1.4,>=1.2.1 # BSD
+sphinx>=1.5.1 # BSD