diff --git a/test-requirements.txt b/test-requirements.txt
index 920874c..3e9abff 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -6,7 +6,8 @@ hacking>=1.1.0,<1.2.0 # Apache-2.0
 
 coverage>=3.6
 python-subunit>=0.0.18
-sphinx>=1.6.2 # BSD
+sphinx!=1.6.6,!=1.6.7,>=1.6.2,<2.0.0;python_version=='2.7'  # BSD
+sphinx!=1.6.6,!=1.6.7,>=1.6.2;python_version>='3.4'  # BSD
 nodeenv>=0.9.4 # BSD
 openstackdocstheme>=1.24.0 # Apache-2.0
 testrepository>=0.0.18