diff --git a/requirements.txt b/requirements.txt
index e06a04ad27..fe8b9b4a1a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 # The order of packages is significant, because pip processes them in the order
 # 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
 six>=1.9.0
 
 Babel>=1.3
@@ -13,8 +13,8 @@ oslo.i18n>=1.5.0 # Apache-2.0
 oslo.utils>=1.9.0 # Apache-2.0
 python-glanceclient>=0.18.0
 python-keystoneclient>=1.6.0
-python-novaclient>=2.22.0
+python-novaclient>=2.26.0
 python-cinderclient>=1.3.1
-python-neutronclient<3,>=2.3.11
+python-neutronclient<3,>=2.6.0
 requests>=2.5.2
 stevedore>=1.5.0 # Apache-2.0