diff --git a/test-requirements.txt b/test-requirements.txt
index db67ec674e..81c8c420d5 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -4,7 +4,7 @@
 pbr>=1.6 # Apache-2.0
 
 # Hacking already pins down pep8, pyflakes and flake8
-hacking<0.12,>=0.11.0 # Apache-2.0
+hacking>=0.12.0,!=0.13.0,<0.14  # Apache-2.0
 
 beautifulsoup4 # MIT
 Jinja2>=2.8 # BSD License (3 clause)