diff --git a/requirements.txt b/requirements.txt
index 726e0ede7..481b32564 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,22 +6,22 @@ Routes>=1.12.3
 amqplib>=0.6.1
 anyjson>=0.3.3
 argparse
-Babel>=0.9.6
+Babel>=1.3
 eventlet>=0.13.0
 greenlet>=0.3.2
 httplib2
 requests>=1.1
-iso8601>=0.1.4
+iso8601==0.1.4
 jsonrpclib
 Jinja2
 kombu>=2.4.8
-netaddr
+netaddr>=0.7.6
 python-neutronclient>=2.3.0,<3
 SQLAlchemy>=0.7.8,<=0.7.99
 WebOb>=1.2.3,<1.3
-python-keystoneclient>=0.3.2
+python-keystoneclient>=0.4.1
 alembic>=0.4.1
-six
+six>=1.4.1
 stevedore>=0.10
 oslo.config>=1.2.0