diff --git a/config/sys-prod.config b/config/sys-prod.config
index 0c094f8..2c1a1f0 100644
--- a/config/sys-prod.config
+++ b/config/sys-prod.config
@@ -47,7 +47,7 @@
       {mysql_iot,
         [{size, 10}, {max_overflow, 20}, {worker_module, mysql}],
         [
-          {host, {172, 19, 0, 2}},
+          {host, {172, 30, 37, 231}},
           {port, 3306},
           {user, "nannonguser"},
           {connect_mode, lazy},