diff --git a/requirements.txt b/requirements.txt
index 13060585ef..e44ed9cda8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,12 +8,12 @@ netaddr>=0.7.6
 PasteDeploy>=1.5.0
 Paste
 Routes>=1.12.3
-six>=1.4.1
+six>=1.5.2
 SQLAlchemy>=0.7.8,<=0.8.99
-sqlalchemy-migrate>=0.8.2
+sqlalchemy-migrate>=0.8.2,!=0.8.4
 passlib
 lxml>=2.3
-iso8601>=0.1.8
+iso8601>=0.1.9
 python-keystoneclient>=0.6.0
 oslo.config>=1.2.0
 oslo.messaging>=1.3.0a4
@@ -21,4 +21,4 @@ Babel>=1.3
 oauthlib>=0.6
 dogpile.cache>=0.5.0
 jsonschema>=2.0.0,<3.0.0
-pycadf>=0.1.9
+pycadf>=0.4.1