diff --git a/test-requirements.txt b/test-requirements.txt
index 80a729d..4317afa 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -3,7 +3,7 @@
 # process, which may cause wedges in the gate later.
 
 coverage>=4.0 # Apache-2.0
-hacking>=0.12.0,!=0.13.0,<0.14  # Apache-2.0
+hacking!=0.13.0,<0.14,>=0.12.0 # Apache-2.0
 mock>=2.0 # BSD
 python-openstackclient>=3.3.0 # Apache-2.0
 python-subunit>=0.0.18 # Apache-2.0/BSD