diff --git a/charts/kubezero-istio/Chart.yaml b/charts/kubezero-istio/Chart.yaml
index 8df274c..ee3c449 100644
--- a/charts/kubezero-istio/Chart.yaml
+++ b/charts/kubezero-istio/Chart.yaml
@@ -16,13 +16,13 @@ dependencies:
     version: ">= 0.1.6"
     repository: https://cdn.zero-downtime.net/charts/
   - name: base
-    version: 1.17.2
+    version: 1.21.2
     repository: https://istio-release.storage.googleapis.com/charts
   - name: istiod
-    version: 1.17.2
+    version: 1.21.2
     repository: https://istio-release.storage.googleapis.com/charts
   - name: kiali-server
-    version: "1.66.0"
+    version: "1.84.0"
     repository: https://kiali.org/helm-charts
     condition: kiali-server.enabled
 kubeVersion: ">= 1.25.0"