diff --git a/requirements.txt b/requirements.txt
index 5f30f7b8..638230e3 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,>=1.3
+pbr<2.0,>=1.4
 
 alembic>=0.7.2
 Babel>=1.3
@@ -31,9 +31,9 @@ python-barbicanclient>=3.0.1
 python-cinderclient>=1.3.1
 python-keystoneclient>=1.6.0
 python-manilaclient>=1.0.4
-python-novaclient>=2.22.0
+python-novaclient>=2.26.0
 python-swiftclient>=2.2.0
-python-neutronclient<3,>=2.3.11
+python-neutronclient<3,>=2.6.0
 python-heatclient>=0.3.0
 six>=1.9.0
 stevedore>=1.5.0 # Apache-2.0