diff --git a/test-requirements.txt b/test-requirements.txt
index 8b5038e..1251624 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -2,8 +2,8 @@
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
 
-hacking>=3.0,<3.1.0 # Apache-2.0
-
+hacking>=3.0,<3.1.0;python_version>='3.5' # Apache-2.0
+hacking>=1.1.0,<1.2.0;python_version=='2.7' # Apache-2.0
 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
 openstackdocstheme>=1.24.0 # Apache-2.0