diff --git a/requirements.txt b/requirements.txt
index ad9168b..c326a8d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,4 +6,4 @@ pbr>=1.6 # Apache-2.0
 openstacksdk>=0.8.6 # Apache-2.0
 osc-lib>=0.1.0 # Apache-2.0
 oslo.i18n>=2.1.0 # Apache-2.0
-oslo.utils>=3.14.0 # Apache-2.0
\ No newline at end of file
+oslo.utils>=3.15.0 # Apache-2.0
diff --git a/setup.py b/setup.py
index 056c16c..782bb21 100644
--- a/setup.py
+++ b/setup.py
@@ -25,5 +25,5 @@ except ImportError:
     pass
 
 setuptools.setup(
-    setup_requires=['pbr'],
+    setup_requires=['pbr>=1.8'],
     pbr=True)
diff --git a/test-requirements.txt b/test-requirements.txt
index 3bf078a..451405e 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,3 +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.
 # Hacking already pins down pep8, pyflakes and flake8
 hacking<0.12,>=0.11.0 # Apache-2.0
 coverage>=3.6 # Apache-2.0