diff --git a/invoice-ninja/network-policy.yaml b/invoice-ninja/network-policy.yaml
index ccc6f3a..111e826 100644
--- a/invoice-ninja/network-policy.yaml
+++ b/invoice-ninja/network-policy.yaml
@@ -29,8 +29,9 @@ spec:
     ports:
     - port: 25
   - to:
-    - ipBlock:
-        cidr: 172.30.0.147/32
+    - namespaceSelector:
+        matchLabels:
+          kubernetes.io/metadata.name: ingress-nginx
     ports:
     - port: 80
     - port: 443