diff --git a/roles/mirrormanager/backend/files/umdl-required b/roles/mirrormanager/backend/files/umdl-required
index f8863c2b36..a57b042f06 100644
--- a/roles/mirrormanager/backend/files/umdl-required
+++ b/roles/mirrormanager/backend/files/umdl-required
@@ -46,7 +46,7 @@ else
 fi
 
 if [ "${1}" ==  "centos" ]; then
-	CENTOS_PRIMARY="master.centos.org"
+	CENTOS_PRIMARY="mref1-priv.iad2.centos.org"
 	# check if a sync is currently in process
 	CODE=$( curl -s -o /dev/null -I -w "%{http_code}" http://${CENTOS_PRIMARY}/9-stream/.sync_in_progress )
 	if [ "${CODE}" -eq "200" ]; then
diff --git a/roles/mirrormanager/backend/templates/scan-primary-mirror-centos.toml b/roles/mirrormanager/backend/templates/scan-primary-mirror-centos.toml
index 67a89b5e45..0ac3040cfc 100644
--- a/roles/mirrormanager/backend/templates/scan-primary-mirror-centos.toml
+++ b/roles/mirrormanager/backend/templates/scan-primary-mirror-centos.toml
@@ -9,8 +9,8 @@ url="postgresql://{{ mirrormanager_db_user }}:{{ mirrormanager_db_pass }}@{{ mir
 [[category]]
 name="CentOS"
 type="rsync"
-url="rsync://master.centos.org/CentOS-Stream-Ref"
-checksum_base="http://master.centos.org/"
+url="rsync://mref1-priv.iad2.centos.org/CentOS-Stream-Ref"
+checksum_base="http://mref1-priv.iad2.centos.org/"
 
 [[repository_mapping]]
 regex="^\\d+(?:-stream)?/AppStream/"