diff --git a/test-requirements.txt b/test-requirements.txt
index 9e387653e..38a37f377 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -5,7 +5,7 @@
 # Hacking already pins down pep8, pyflakes and flake8
 coverage>=4.0 # Apache-2.0
 flake8<2.6.0,>=2.5.4 # MIT
-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
 openstackdocstheme>=1.5.0 # Apache-2.0
 oslotest>=1.10.0 # Apache-2.0