diff --git a/centos-mirror-tools/yum.repos.d/StarlingX-Centos-7.9.repo b/centos-mirror-tools/yum.repos.d/StarlingX-Centos-7.9.repo
index bf65e03a..8b230abd 100644
--- a/centos-mirror-tools/yum.repos.d/StarlingX-Centos-7.9.repo
+++ b/centos-mirror-tools/yum.repos.d/StarlingX-Centos-7.9.repo
@@ -86,6 +86,13 @@ gpgcheck=1
 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
 enabled=1
 
+[StarlingX-C7.9.2009-rt-source]
+name=StarlingX-CentOS-7.9.2009 - rt-source
+baseurl=https://vault.centos.org/centos/7.9.2009/rt/Source/
+gpgcheck=1
+gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
+enabled=1
+
 [StarlingX-C7.9.2009-rt]
 name=StarlingX-CentOS-7.9.2009 - rt
 baseurl=http://mirror.centos.org/centos/7.9.2009/rt/x86_64/