diff --git a/common-prod/overlay/etc/hiera/data/group.yaml b/common-prod/overlay/etc/hiera/data/group.yaml
index efa0d44..5686761 100644
--- a/common-prod/overlay/etc/hiera/data/group.yaml
+++ b/common-prod/overlay/etc/hiera/data/group.yaml
@@ -6,6 +6,7 @@ mariadb_clients:
   - 89.47.191.96  # internal-dco-prod-app-2.geteduroam.sunet.se
   - 89.45.236.40  # internal-sto3-prod-radius-3.geteduroam.sunet.se
   - 89.45.236.66  # internal-sto3-prod-app-3.geteduroam.sunet.se
+  - 89.47.185.163 # internal-sto1-prod-backup-1.geteduroam.sunet.se
 mariadb_cluster_nodes:
   - 89.45.237.24  # internal-sto3-prod-db-3.geteduroam.sunet.se
   - 89.47.185.115 # internal-sto1-prod-db-1.geteduroam.sunet.se