diff --git a/charts/kubezero-istio/Chart.yaml b/charts/kubezero-istio/Chart.yaml
index fa81092..22dbe8d 100644
--- a/charts/kubezero-istio/Chart.yaml
+++ b/charts/kubezero-istio/Chart.yaml
@@ -2,7 +2,7 @@ apiVersion: v2
 name: kubezero-istio
 description: KubeZero Umbrella Chart for Istio
 type: application
-version: 0.3.1
+version: 0.3.2
 appVersion: 1.7.1
 home: https://kubezero.com
 icon: https://cdn.zero-downtime.net/assets/kubezero/logo-small-64.png
diff --git a/charts/kubezero-istio/templates/istio-private-ingress.yaml b/charts/kubezero-istio/templates/istio-private-ingress.yaml
index 5f9ea4f..811efde 100644
--- a/charts/kubezero-istio/templates/istio-private-ingress.yaml
+++ b/charts/kubezero-istio/templates/istio-private-ingress.yaml
@@ -67,6 +67,10 @@ spec:
   meshConfig:
     accessLogFile: /dev/stdout
     accessLogEncoding: 'JSON'
+    h2UpgradePolicy: 'DO_NOT_UPGRADE'
+    tcpKeepalive:
+      interval: 30s
+      time: 60s
 
   values:
     gateways:
diff --git a/charts/kubezero-istio/templates/istio.yaml b/charts/kubezero-istio/templates/istio.yaml
index 12281fd..95a0690 100644
--- a/charts/kubezero-istio/templates/istio.yaml
+++ b/charts/kubezero-istio/templates/istio.yaml
@@ -91,6 +91,9 @@ spec:
     accessLogFile: /dev/stdout
     accessLogEncoding: 'JSON'
     h2UpgradePolicy: 'DO_NOT_UPGRADE'
+    tcpKeepalive:
+      interval: 30s
+      time: 60s
   values:
     gateways:
       istio-ingressgateway: