diff --git a/test-requirements.txt b/test-requirements.txt
index 2fbeb1cf0c..ee9020cd4c 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 already pins down pep8, pyflakes and flake8
-hacking<0.13,>=0.12.0 # Apache-2.0
+hacking>=0.12.0,!=0.13.0,<0.14  # Apache-2.0
 bandit>=1.1.0 # Apache-2.0
 sphinx>=1.5.1 # BSD
 os-api-ref>=1.0.0 # Apache-2.0