diff --git a/test-requirements.txt b/test-requirements.txt
index 1dab14e..b18a222 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -2,7 +2,7 @@
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
 
-hacking>=3.0.1,<3.1.0 # Apache-2.0
+hacking>=3.0.1,<3.1.0;python_version>='3.5' # Apache-2.0
 
 sphinx>=2.0.0,!=2.1.0 # BSD
 openstackdocstheme>=2.0.0 # Apache-2.0