diff --git a/test-requirements.txt b/test-requirements.txt
index 37e34e1..eeaacbf 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,7 +1,7 @@
 # The order of packages is significant, because pip processes them in the order
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
-hacking<0.11,>=0.10.0
+hacking>=0.12.0,!=0.13.0,<0.14  # Apache-2.0
 ipaddress>=1.0.7;python_version<'3.3' # PSF
 mock>=2.0 # BSD
 netaddr!=0.7.16,>=0.7.13 # BSD