diff --git a/requirements.txt b/requirements.txt
index 8b13789..2683dd4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1 +1,4 @@
+# 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.
 
diff --git a/setup.py b/setup.py
index d678c28..782bb21 100644
--- a/setup.py
+++ b/setup.py
@@ -1,4 +1,4 @@
-# (C) Copyright 2014 Hewlett Packard Enterprise Development Company LP
+# Copyright (c) 2013 Hewlett-Packard Development Company, L.P.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -13,9 +13,17 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+# THIS FILE IS MANAGED BY THE GLOBAL REQUIREMENTS REPO - DO NOT EDIT
 import setuptools
 
+# In python < 2.7.4, a lazy loading of package `pbr` will break
+# setuptools if some other modules registered functions in `atexit`.
+# solution from: http://bugs.python.org/issue15881#msg170215
+try:
+    import multiprocessing  # noqa
+except ImportError:
+    pass
+
 setuptools.setup(
-    setup_requires=['pbr'],
-    pbr=True
-)
+    setup_requires=['pbr>=1.8'],
+    pbr=True)
diff --git a/test-requirements.txt b/test-requirements.txt
index c0de34d..ac3198c 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1 +1,4 @@
-hacking>=0.9.2,<0.10
+# 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,>=0.11.0 # Apache-2.0