diff --git a/test-requirements.txt b/test-requirements.txt
index a3d8f4ec..155e5bd1 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,10 +1,10 @@
 # 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>=0.12.0,!=0.13.0,<0.14 # Apache-2.0
+hacking!=0.13.0,<0.14,>=0.12.0 # Apache-2.0
 coverage>=4.0 # Apache-2.0
 fixtures>=3.0.0 # Apache-2.0/BSD
-flake8>=2.5.4,<2.6.0 # MIT
+flake8<2.6.0,>=2.5.4 # MIT
 pep8==1.5.7 # MIT
 pyflakes==0.8.1 # MIT
 python-subunit>=0.0.18 # Apache-2.0/BSD