diff --git a/doc/requirements.txt b/doc/requirements.txt
index 7e68e1c..b3abbc3 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -3,7 +3,7 @@
 # process, which may cause wedges in the gate later.
 
 # this is required for the docs build jobs
-sphinx!=1.6.6,>=1.6.2 # BSD
+sphinx!=1.6.6,!=1.6.7,>=1.6.2 # BSD
 openstackdocstheme>=1.18.1 # Apache-2.0
 reno>=2.5.0 # Apache-2.0
 sphinxmark>=0.1.14 # Apache-2.0