diff --git a/lib/update-bridgehead.sh b/lib/update-bridgehead.sh
index 0f1c413..ab39cca 100755
--- a/lib/update-bridgehead.sh
+++ b/lib/update-bridgehead.sh
@@ -112,7 +112,8 @@ if [ -z "${BACKUP_DIRECTORY}" ]; then
     chown -R "$BACKUP_DIRECTORY" bridgehead;
   fi
   checkOwner "$BACKUP_DIRECTORY" bridgehead || fail_and_report 1 "Automatic maintenance failed: Wrong permissions for backup directory $(pwd)"
-  BACKUP_SERVICES="$(docker ps --filter ancestor=postgres:14-alpine --format "{{.Names}}" | tr "\n" "\ ")"
+  # Collect all container names that contain '-db'
+  BACKUP_SERVICES="$(docker ps --filter name=-db --format "{{.Names}}" | tr "\n" "\ ")"
   log INFO "Performing automatic maintenance: Creating Backups for $BACKUP_SERVICES";
   for service in $BACKUP_SERVICES; do
     if [ ! -d "$BACKUP_DIRECTORY/$service" ]; then