diff --git a/kustomization.yaml b/kustomization.yaml
index 0c1b84d..f592714 100644
--- a/kustomization.yaml
+++ b/kustomization.yaml
@@ -3,6 +3,6 @@ kind: Kustomization
 resources:
 # Uncomment if storing configuration in the repo
 # - configmap.yaml
-#  - networkpolicy.yaml
+  - networkpolicy.yaml
   - ./thelounge
   - ./znc
diff --git a/networkpolicy.yaml b/networkpolicy.yaml
index 627ce93..68ac730 100644
--- a/networkpolicy.yaml
+++ b/networkpolicy.yaml
@@ -13,8 +13,13 @@ spec:
 
   ingress:
     - from:
-        - ipBlock:
-            cidr: 0.0.0.0/0
+        - namespaceSelector:
+            matchLabels:
+              kubernetes.io/metadata.name: irc
+    - from:
+        - namespaceSelector:
+            matchLabels:
+              kubernetes.io/metadata.name: istio-system
 
   egress:
     # namespace-local