diff --git a/requirements.txt b/requirements.txt
index d410b0385c6..d297a22b129 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,17 +5,17 @@ argparse
 Babel>=1.3
 eventlet>=0.13.0
 greenlet>=0.3.2
-iso8601>=0.1.4
+iso8601>=0.1.4,!=0.1.5,!=0.1.6
 kombu>=2.4.8
 lockfile>=0.8
 lxml>=2.3
-netaddr
+netaddr>=0.7.6
 oslo.config>=1.2.0
 paramiko>=1.8.0
 Paste
 PasteDeploy>=1.5.0
 python-glanceclient>=0.9.0
-python-keystoneclient>=0.3.2
+python-keystoneclient>=0.4.1
 python-novaclient>=2.15.0
 python-swiftclient>=1.5
 Routes>=1.12.3