diff --git a/requirements.txt b/requirements.txt
index 10fe86d80f..5654428ec8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,12 +1,13 @@
 # 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.
-pbr<2.0,>=0.11
+pbr<2.0,>=1.3
 SQLAlchemy<1.1.0,>=0.9.7
 eventlet>=0.17.4
 keystonemiddleware>=1.5.0
 kombu>=3.0.7
-Routes!=2.0,!=2.1,>=1.12.3
+Routes!=2.0,!=2.1,>=1.12.3;python_version=='2.7'
+Routes!=2.0,>=1.12.3;python_version!='2.7'
 WebOb>=1.2.3
 PasteDeploy>=1.5.0
 Paste
@@ -30,11 +31,11 @@ pexpect!=3.3,>=3.1 # ISC License
 oslo.config>=1.11.0 # Apache-2.0
 oslo.i18n>=1.5.0 # Apache-2.0
 oslo.serialization>=1.4.0 # Apache-2.0
-oslo.utils>=1.6.0 # Apache-2.0
+oslo.utils>=1.9.0 # Apache-2.0
 oslo.concurrency>=2.1.0 # Apache-2.0
 MySQL-python;python_version=='2.7'
 Babel>=1.3
 six>=1.9.0
 stevedore>=1.5.0 # Apache-2.0
-oslo.messaging!=1.12.0,>=1.8.0 # Apache-2.0
+oslo.messaging>=1.16.0 # Apache-2.0
 osprofiler>=0.3.0 # Apache-2.0
diff --git a/setup.py b/setup.py
index 056c16c2b8..d8080d05c8 100644
--- a/setup.py
+++ b/setup.py
@@ -25,5 +25,5 @@ except ImportError:
     pass
 
 setuptools.setup(
-    setup_requires=['pbr'],
+    setup_requires=['pbr>=1.3'],
     pbr=True)
diff --git a/test-requirements.txt b/test-requirements.txt
index 416a9ce7a8..f2be8cbf12 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -18,7 +18,8 @@ http://tarballs.openstack.org/python-troveclient/python-troveclient-master.tar.g
 
 
 
-mock>=1.0
+mock>=1.1;python_version!='2.6'
+mock==1.0.1;python_version=='2.6'
 mox3>=0.7.0
 testtools>=1.4.0
 discover