diff --git a/manifests/xen4centos/yumrepo/install.pp b/manifests/xen4centos/yumrepo/install.pp
index 525f4db69503bef807c3c486860c3ca6f4be9a20..b94437b01269e780aa78790c39f3f6456bc16a19 100644
--- a/manifests/xen4centos/yumrepo/install.pp
+++ b/manifests/xen4centos/yumrepo/install.pp
@@ -31,6 +31,20 @@ define xen::xen4centos::yumrepo::install(
 	    "centos-release-xen${versiontag}":
 		ensure => installed;
 	}
+	# Point to a CentOS Vault mirror for older CentOS versions.
+	if (versioncmp($::operatingsystemrelease, 8) < 0)
+	{
+	    include pkgrepos::vars
+	    $repofile = "/etc/yum.repos.d/CentOS-Xen${versiontag}.repo"
+	    $vault_url = "${pkgrepos::vars::centos_vault_base}/${pkgrepos::vars::eol_rhel_last_version}"
+
+	    regexp_replace_lines {
+		'xen::xen4centos::yumrepo::centos-vault':
+		    file => $repofile,
+		    pattern => '^baseurl=https?://[^/]*/centos/.*/virt/(.*)',
+		    replacement => "baseurl=${vault_url}/virt/\\1";
+	    }
+	}
     }
     elsif ($ensure == 'absent')
     {