diff --git a/apps/overlays/au-syd1/cert-manager/values.yaml b/apps/overlays/au-syd1/cert-manager/values.yaml
index 7dd96da..3e94eb4 100644
--- a/apps/overlays/au-syd1/cert-manager/values.yaml
+++ b/apps/overlays/au-syd1/cert-manager/values.yaml
@@ -5,6 +5,11 @@ config:
   apiVersion: controller.config.cert-manager.io/v1alpha1
   kind: ControllerConfiguration
   enableGatewayAPI: true
+  acmeDNS01:
+    recursiveNameservers:
+      - "8.8.8.8:53"
+      - "1.1.1.1:53"
+    recursiveNameserversOnly: true
 
 replicaCount: 2