diff --git a/requirements.txt b/requirements.txt
index 8646341..645c922 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,2 @@
-pbr>=0.5.21,<1.0
-Babel>=0.9.6
\ No newline at end of file
+pbr>=0.6,!=0.7,<1.0
+Babel>=1.3
diff --git a/setup.py b/setup.py
index 70c2b3f..7363757 100644
--- 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 2a46bd8..d43524b 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -3,9 +3,9 @@ hacking>=0.5.6,<0.8
 coverage>=3.6
 discover
 fixtures>=0.3.14
-python-subunit
-sphinx>=1.1.2
-oslosphinx
-testrepository>=0.0.17
-testscenarios>=0.4,<0.5
-testtools>=0.9.32
\ No newline at end of file
+python-subunit>=0.0.18
+sphinx>=1.1.2,!=1.2.0,<1.3
+oslosphinx>=2.2.0.0a2
+testrepository>=0.0.18
+testscenarios>=0.4
+testtools>=0.9.34