diff --git a/test-requirements.txt b/test-requirements.txt
index 7daf45ca..658aabab 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!=0.13.0,<0.14,>=0.12.0 # Apache-2.0
 Babel>=2.3.4 # BSD
 coverage>=4.0 # Apache-2.0
 mock>=2.0 # BSD