diff --git a/requirements.txt b/requirements.txt
index 1e88678..c2601bc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
-cliff>=1.4.3
+cliff>=1.6.0
 jsonschema>=2.0.0,<3.0.0
-pbr>=0.6,<1.0
-python-keystoneclient>=0.6.0
+pbr>=0.6,!=0.7,<1.0
+python-keystoneclient>=0.9.0
 requests>=1.1
-six>=1.6.0
+six>=1.7.0
 stevedore>=0.14
diff --git a/setup.py b/setup.py
index 70c2b3f..7363757 100755
--- a/setup.py
+++ b/setup.py
@@ -17,6 +17,14 @@
 # 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)
diff --git a/test-requirements.txt b/test-requirements.txt
index 820d6a6..bcd9d75 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -3,5 +3,5 @@ hacking>=0.8.0,<0.9
 coverage>=3.6
 discover
 python-subunit>=0.0.18
-sphinx>=1.1.2,<1.2
-testrepository>=0.0.17
+sphinx>=1.1.2,!=1.2.0,<1.3
+testrepository>=0.0.18