diff --git a/requirements.txt b/requirements.txt
index 58a45b0..2c3ad15 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,15 +2,15 @@
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
 
-Babel>=2.3.4 # BSD
-pbr>=1.8 # Apache-2.0
-osc-lib>=1.2.0 # Apache-2.0
+Babel!=2.4.0,>=2.3.4 # BSD
+pbr!=2.1.0,>=2.0.0 # Apache-2.0
+osc-lib>=1.5.1 # Apache-2.0
 PrettyTable<0.8,>=0.7.1 # BSD
-oslo.i18n>=2.1.0 # Apache-2.0
+oslo.i18n!=3.15.2,>=2.1.0 # Apache-2.0
 oslo.serialization>=1.10.0 # Apache-2.0
-oslo.utils>=3.18.0 # Apache-2.0
+oslo.utils>=3.20.0 # Apache-2.0
 python-keystoneclient>=3.8.0 # Apache-2.0
-python-openstackclient>=3.3.0 # Apache-2.0
+python-openstackclient!=3.10.0,>=3.3.0 # Apache-2.0
 PyYAML>=3.10.0 # MIT
-requests!=2.12.2,>=2.10.0 # Apache-2.0
+requests!=2.12.2,!=2.13.0,>=2.10.0 # Apache-2.0
 six>=1.9.0 # MIT
diff --git a/setup.py b/setup.py
index 782bb21..566d844 100644
--- a/setup.py
+++ b/setup.py
@@ -25,5 +25,5 @@ except ImportError:
     pass
 
 setuptools.setup(
-    setup_requires=['pbr>=1.8'],
+    setup_requires=['pbr>=2.0.0'],
     pbr=True)
diff --git a/test-requirements.txt b/test-requirements.txt
index b46a5ed..1292e1b 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -3,11 +3,11 @@
 # process, which may cause wedges in the gate later.
 
 # Hacking already pins down pep8, pyflakes and flake8
-hacking>=0.12.0,!=0.13.0,<0.14  # Apache-2.0
-coverage>=4.0 # Apache-2.0
+hacking!=0.13.0,<0.14,>=0.12.0 # Apache-2.0
+coverage!=4.4,>=4.0 # Apache-2.0
 fixtures>=3.0.0 # Apache-2.0/BSD
 mock>=2.0 # BSD
 oslosphinx>=4.7.0 # Apache-2.0
-sphinx!=1.3b1,<1.4,>=1.2.1 # BSD
+sphinx!=1.6.1,>=1.5.1 # BSD
 testrepository>=0.0.18 # Apache-2.0/BSD
 testtools>=1.4.0 # MIT