diff --git a/charts/ycast/templates/networkpolicy.yaml b/charts/ycast/templates/networkpolicy.yaml
index ece33d7..c900e28 100644
--- a/charts/ycast/templates/networkpolicy.yaml
+++ b/charts/ycast/templates/networkpolicy.yaml
@@ -1,3 +1,4 @@
+apiVersion: networking.k8s.io/v1
 kind: NetworkPolicy
 metadata:
   name: np-{{ include "ycast.fullname" . }}