diff --git a/requirements.txt b/requirements.txt
index 616a80d1..f5f8ae40 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@
 # 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 # Apache-2.0
-Babel>=2.3.4 # BSD
+Babel!=2.4.0,>=2.3.4 # BSD
 
 Paste # MIT
 PasteDeploy>=1.5.0 # MIT
@@ -19,8 +19,8 @@ netaddr!=0.7.16,>=0.7.13 # BSD
 netifaces>=0.10.4 # MIT
 neutron-lib>=1.3.0 # Apache-2.0
 retrying!=1.3.0,>=1.2.3 # Apache-2.0
-SQLAlchemy>=1.0.10 # MIT
-WebOb>=1.6.0 # MIT
+SQLAlchemy!=1.1.5,!=1.1.6,!=1.1.7,!=1.1.8,>=1.0.10 # MIT
+WebOb>=1.7.1 # MIT
 python-cinderclient>=2.0.1 # Apache-2.0
 python-glanceclient>=2.5.0 # Apache-2.0
 python-keystoneclient>=3.8.0 # Apache-2.0