diff --git a/deploy/supervisor/service.yaml b/deploy/supervisor/service.yaml
index e2841a63..d8739c40 100644
--- a/deploy/supervisor/service.yaml
+++ b/deploy/supervisor/service.yaml
@@ -74,6 +74,9 @@ metadata:
 spec:
   type: LoadBalancer
   selector: #@ defaultLabel()
+  #@ if data.values.service_loadbalancer_ip:
+  loadBalancerIP: #@ data.values.service_loadbalancer_ip
+  #@ end
   ports:
     #@ if data.values.service_http_loadbalancer_port:
     - name: http
diff --git a/deploy/supervisor/values.yaml b/deploy/supervisor/values.yaml
index aea4a04e..f9e1aac0 100644
--- a/deploy/supervisor/values.yaml
+++ b/deploy/supervisor/values.yaml
@@ -39,6 +39,7 @@ image_pull_dockerconfigjson: #! e.g. {"auths":{"https://registry.example.com":{"
 #! Typically you would set a value for only one of the following service types, for either HTTP or HTTPS depending on your needs.
 #! An HTTP service should not be exposed outside the cluster. It would not be secure to serve OIDC endpoints to end users via HTTP.
 #! Setting any of these values means that a Service of that type will be created.
+#! Note that all port numbers should be numbers (not strings), i.e. use ytt's `--data-value-yaml` instead of `--data-value`.
 service_http_nodeport_port: #! when specified, creates a NodePort Service with this `port` value, with port 80 as its `targetPort`; e.g. 31234
 service_http_nodeport_nodeport: #! the `nodePort` value of the NodePort Service, optional when `service_http_nodeport_port` is specified; e.g. 31234
 service_http_loadbalancer_port: #! when specified, creates a LoadBalancer Service with this `port` value, with port 80 as its `targetPort`; e.g. 443
@@ -47,3 +48,7 @@ service_https_nodeport_port: #! when specified, creates a NodePort Service with
 service_https_nodeport_nodeport: #! the `nodePort` value of the NodePort Service, optional when `service_http_nodeport_port` is specified; e.g. 31243
 service_https_loadbalancer_port: #! when specified, creates a LoadBalancer Service with this `port` value, with port 443 as its `targetPort`; e.g. 443
 service_https_clusterip_port: #! when specified, creates a ClusterIP Service with this `port` value, with port 443 as its `targetPort`; e.g. 443
+#! The `loadBalancerIP` value of the LoadBalancer Service.
+#! Ignored unless service_http_loadbalancer_port and/or service_https_loadbalancer_port are provided.
+#! Optional.
+service_loadbalancer_ip: #! e.g. 1.2.3.4