I am installing openstack-havana and got a dependency problem.

yum install openstack-nova-conductor
Loaded plugins: fastestmirror, priorities, security
Repository epel is listed more than once in the configuration
Loading mirror speeds from cached hostfile 
572 packages excluded due to repository priority protections
Setting up Install Process
Resolving Dependencies
--> Running transaction check 
---> Package openstack-nova-conductor.noarch 0:2013.2.1-1.el6 will be installed
--> Processing Dependency: openstack-nova-common = 2013.2.1-1.el6 for package: openstack-nova-conductor-  2013.2.1-1.el6.noarch
--> Finished Dependency Resolution 
Error: Package: openstack-nova-conductor-2013.2.1-1.el6.noarch (openstack-havana)
       Requires: openstack-nova-common = 2013.2.1-1.el6
       Installed: openstack-nova-common-2012.2.4-1.el6.noarch (@epel)
           openstack-nova-common = 2012.2.4-1.el6
  You could try using --skip-broken to work around the problem
 You could try running: rpm -Va --nofiles --nodigest

It seems openstack-nova-conductor-2013.2.1 depends on openstack-nova-common-2013.2.1. But I got openstack-nova-common-2012.2.4 installed, I try to upgrade openstack-nova-common,I found openstack-nova-volume denpends on openstack-nova-common-2012.2.4 , and there is no new version of openstack-nova-volume.How should I solve this?

I am using CentOS 6.4. It happens with openstack-grizzly.