diff --git a/packaging/rpm/python-synergy-scheduler-manager.spec b/packaging/rpm/python-synergy-scheduler-manager.spec
index 0c996a0..89cbed0 100644
--- a/packaging/rpm/python-synergy-scheduler-manager.spec
+++ b/packaging/rpm/python-synergy-scheduler-manager.spec
@@ -11,13 +11,15 @@ License:       ASL 2.0
 BuildArch:     noarch
 BuildRequires: python-devel
 BuildRequires: python-setuptools
-Requires:      python-nova
-Requires:      python-oslo-config
-Requires:      python-oslo-messaging
-Requires:      python-pbr
-Requires:      python-requests
-Requires:      python-sqlalchemy
-Requires:      python-synergy-service
+Requires:      python-nova >= 12.0
+Requires:      python-oslo-config >= 2.4
+Requires:      python-oslo-messaging >= 2.5
+Requires:      python-oslo-serialization >= 1.9
+Requires:      python-oslo-versionedobjects >= 0.10
+Requires:      python-pbr >= 1.8
+Requires:      python-requests >= 2.10
+Requires:      python-sqlalchemy >= 1.0
+Requires:      python-synergy-service >= 1.0.1
 
 
 %description
diff --git a/requirements.txt b/requirements.txt
index 73d282e..af01315 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,9 +2,12 @@
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
 
-pbr>=1.6
-synergy-service>=1.0.0,<1.1.0
-oslo.config>=2.4.0,<3.0.0
-oslo.messaging>=2.5.0,<3.0.0
-requests>=2.7.0,<3.0.0
-sqlalchemy>=1.0.0,<1.1.0
+pbr~=1.8
+
+oslo.config~=2.4
+oslo.messaging~=2.5
+oslo.serialization~=1.9
+oslo.versionedobjects~=0.10
+requests>=2.0.0,<3.0.0  # availability: 2.10.0 on CentOS 7, 2.7.0 on Ubuntu 14.04
+sqlalchemy~=1.0
+synergy-service~=1.0.1