How can I get yum to keep package at a certain version.
There are several ways you can do this.
One is to exclude it from your updates list. See man yum.conf for more details.
Another way to pin package to a certain version is to use the versionlock plugin.
If you are using the latest Fedora then the plugin can be installed using:
yum install yum-plugin-versionlock
To add files that you want version locked, use the following yum command:
yum versionlock [package-name]