diff --git a/test-requirements.txt b/test-requirements.txt
index 9c7d865..3d2e1c5 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,5 +1 @@
-# 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>=3.0,<3.1.0;python_version>='3.5' # Apache-2.0
+hacking>=6.1.0,<6.2.0 # Apache-2.0