diff --git a/doc/requirements.txt b/doc/requirements.txt
index 50d1565..ec94999 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -1,6 +1,2 @@
-# 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.
-
 openstackdocstheme>=2.2.1 # Apache-2.0
 sphinx>=2.0.0,!=2.1.0 # BSD
diff --git a/requirements.txt b/requirements.txt
index 152030e..f72808c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,6 @@
-# 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.
-
+# Requirements lower bounds listed here are our best effort to keep them up to
+# date but we do not test them so no guarantee of having them all correct. If
+# you find any incorrect lower bounds, let us know or propose a fix.
 pbr!=2.1.0,>=2.0.0 # Apache-2.0
 
 horizon>=18.2.0 # Apache-2.0
diff --git a/test-requirements.txt b/test-requirements.txt
index fb1ca6c..bfd9e2d 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,9 +1,5 @@
-# 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 already pins down pep8, pyflakes and flake8
-
-hacking>=3.0.1,<3.1.0 # Apache-2.0
+hacking>=7.0.0,<7.1.0 # Apache-2.0
 coverage!=4.4,>=4.0 # Apache-2.0
 python-subunit>=1.0.0 # Apache-2.0/BSD
 selenium>=2.50.1 # Apache-2.0