diff --git a/istio/istio/kustomization.yml b/istio/istio/kustomization.yml
index bb3cfe49..383072c9 100644
--- a/istio/istio/kustomization.yml
+++ b/istio/istio/kustomization.yml
@@ -17,7 +17,7 @@ helmCharts:
     includeCRDs: true
   - name: istiod
     repo: https://istio-release.storage.googleapis.com/charts
-    version: 1.20.3 # https://artifacthub.io/packages/helm/istio-official/istiod
+    version: 1.21.1 # https://artifacthub.io/packages/helm/istio-official/istiod
     releaseName: istiod
     namespace: istio-system
     valuesFile: values-discovery.yml