diff --git a/test-requirements.txt b/test-requirements.txt
index 8dd27c8..b5999c2 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -11,7 +11,7 @@ testrepository>=0.0.18 # Apache-2.0/BSD
 testtools>=2.2.0 # MIT
 
 # Documentation
-sphinx!=1.6.6,>=1.6.2 # BSD
+sphinx!=1.6.6,!=1.6.7,>=1.6.2 # BSD
 reno>=2.5.0 # Apache-2.0
 
 # Bandit build requirements