diff --git a/source/installguide/hypervisor/kvm.rst b/source/installguide/hypervisor/kvm.rst
index a498d27089..bb1756a2c4 100644
--- a/source/installguide/hypervisor/kvm.rst
+++ b/source/installguide/hypervisor/kvm.rst
@@ -153,6 +153,7 @@ In RHEL or CentOS:
 
 .. parsed-literal::
 
+   $ yum install -y epel-release
    $ yum install cloudstack-agent
 
 In Ubuntu:
diff --git a/source/installguide/hypervisor/lxc.rst b/source/installguide/hypervisor/lxc.rst
index a0b88d7e62..4ee94348e5 100644
--- a/source/installguide/hypervisor/lxc.rst
+++ b/source/installguide/hypervisor/lxc.rst
@@ -149,6 +149,7 @@ In RHEL or CentOS:
 
 .. parsed-literal::
 
+   $ yum install -y epel-release
    $ yum install cloudstack-agent
 
 In Ubuntu:
diff --git a/source/quickinstallationguide/qig.rst b/source/quickinstallationguide/qig.rst
index 38642c3a57..c5ee82b76a 100644
--- a/source/quickinstallationguide/qig.rst
+++ b/source/quickinstallationguide/qig.rst
@@ -536,6 +536,7 @@ afterwards we'll need to configure a few things.
 
 .. parsed-literal::
 
+   # yum -y install epel-release
    # yum -y install cloudstack-agent
 
 
diff --git a/source/releasenotes/about.rst b/source/releasenotes/about.rst
index c746d746af..fefdb1e916 100644
--- a/source/releasenotes/about.rst
+++ b/source/releasenotes/about.rst
@@ -46,6 +46,11 @@ The full list of new features can be found in the project release notes at http:
 
 Apache CloudStack powers numerous elastic Cloud computing services, including solutions that have ranked as Gartner Magic Quadrant leaders. Highlighted in the Forrester Q4 2017 Enterprise Open Source Cloud Adoption report, Apache CloudStack "sits beneath hundreds of service provider clouds", including Fortune 5 multinational corporations. A list of known Apache CloudStack users are available at http://cloudstack.apache.org/users.html
 
+Libvirt Python Dependency on KVM and CentOS
+===========================================
+
+For CentOS users using the security groups feature on KVM it is needed to install the epel-release and python36-libvirt packages.
+
 New User Interface & Depreciation notice of existing UI
 =======================================================
 
@@ -58,4 +63,3 @@ The next LTS release (likely to be version 4.15) of Apache Cloudstack will ship
 In the following release (likely to be 4.16), the old UI will be deprecated.
 
 Please see `Primate install guide <../installguide/primate.html>`_
-
diff --git a/source/upgrading/upgrade/upgrade-4.11.rst b/source/upgrading/upgrade/upgrade-4.11.rst
index e12f682ad0..c3d920e6c3 100644
--- a/source/upgrading/upgrade/upgrade-4.11.rst
+++ b/source/upgrading/upgrade/upgrade-4.11.rst
@@ -302,6 +302,8 @@ For KVM hosts, upgrade the ``cloudstack-agent`` package
 
    .. parsed-literal::
 
+      $ sudo yum install -y epel-release
+      $ sudo yum install -y python36-libvirt
       $ sudo yum upgrade cloudstack-agent
 
 #. Restart the agent:
diff --git a/source/upgrading/upgrade/upgrade-4.13.rst b/source/upgrading/upgrade/upgrade-4.13.rst
index a85b833945..753afe2e57 100644
--- a/source/upgrading/upgrade/upgrade-4.13.rst
+++ b/source/upgrading/upgrade/upgrade-4.13.rst
@@ -281,6 +281,8 @@ For KVM hosts, upgrade the ``cloudstack-agent`` package
 
    .. parsed-literal::
 
+      $ sudo yum install -y epel-release
+      $ sudo yum install -y python36-libvirt
       $ sudo yum upgrade cloudstack-agent
 
 #. Restart the agent:
diff --git a/source/upgrading/upgrade/upgrade-4.9.rst b/source/upgrading/upgrade/upgrade-4.9.rst
index 13ae88fa1c..eda121aceb 100644
--- a/source/upgrading/upgrade/upgrade-4.9.rst
+++ b/source/upgrading/upgrade/upgrade-4.9.rst
@@ -383,6 +383,8 @@ For KVM hosts, upgrade the ``cloudstack-agent`` package
 
    .. parsed-literal::
 
+      $ sudo yum install -y epel-release
+      $ sudo yum install -y python36-libvirt
       $ sudo yum upgrade cloudstack-agent
 
 #. Verify that the file ``/etc/cloudstack/agent/environment.properties`` has a