diff --git a/04-k8s-apps/index.ts b/04-k8s-apps/index.ts
index 2848f48..3f1028b 100644
--- a/04-k8s-apps/index.ts
+++ b/04-k8s-apps/index.ts
@@ -9,7 +9,7 @@ const bootstrapRef = new pulumi.StackReference(
 );
 
 const kubeconfig = bootstrapRef.requireOutput("kubeconfig");
-const domain = config.require("domain");
+const domain = config.requireSecret("domain");
 
 const k8sProvider = new k8s.Provider("k3s", { kubeconfig });
 const opts = (extras?: pulumi.ResourceOptions): pulumi.ResourceOptions => ({