diff --git a/requirements.txt b/requirements.txt
index 93e29c68..cb74bf15 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ argparse
 iso8601>=0.1.9
 pbr>=0.6,!=0.7,<1.0
 PrettyTable>=0.7,<0.8
-python-keystoneclient>=0.7.0
+python-keystoneclient>=0.9.0
 PyYAML>=3.1.0
 requests>=1.1
-six>=1.5.2
+six>=1.7.0
diff --git a/setup.py b/setup.py
index 70c2b3f3..73637574 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 d85a7b9e..0fe69885 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -5,7 +5,7 @@ fixtures>=0.3.14
 hacking>=0.8.0,<0.9
 mock>=1.0
 mox3>=0.7.0
-sphinx>=1.1.2,<1.2
+sphinx>=1.1.2,!=1.2.0,<1.3
 testrepository>=0.0.18
 testscenarios>=0.4
 testtools>=0.9.34