diff --git a/test-requirements.txt b/test-requirements.txt
index 8b3f9b2a..98d04ae2 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -8,8 +8,8 @@ mock>=2.0.0 # BSD
 oslotest>=3.2.0 # Apache-2.0
 
 # These are needed for docs generation/testing
-openstackdocstheme>=1.17.0 # Apache-2.0
-sphinx>=1.6.2 # BSD
+openstackdocstheme>=1.18.1 # Apache-2.0
+sphinx!=1.6.6,>=1.6.2 # BSD
 doc8>=0.6.0 # Apache-2.0
 reno>=2.5.0 # Apache-2.0