diff --git a/requirements.txt b/requirements.txt
index 8d508bb6..788b8a13 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -27,8 +27,8 @@ python-cinderclient>=1.3.1
 python-glanceclient>=0.18.0
 python-heatclient>=0.3.0
 python-keystoneclient>=1.6.0
-python-neutronclient<3,>=2.6.0
-python-novaclient>=2.26.0
+python-neutronclient>=2.6.0
+python-novaclient>=2.28.1
 PyYAML>=3.1.0
 requests>=2.5.2
 retrying!=1.3.0,>=1.2.3 # Apache-2.0