diff --git a/charts/kubezero-istio-ingress/charts/istio-ingress/Chart.yaml b/charts/kubezero-istio-ingress/charts/istio-ingress/Chart.yaml
index 78bd0c46..d402a1f8 100644
--- a/charts/kubezero-istio-ingress/charts/istio-ingress/Chart.yaml
+++ b/charts/kubezero-istio-ingress/charts/istio-ingress/Chart.yaml
@@ -1,6 +1,6 @@
 apiVersion: v1
 name: istio-ingress
-version: 1.9.0
+version: 1.9.1
 tillerVersion: ">=2.7.2"
 description: Helm chart for deploying Istio gateways
 keywords:
diff --git a/charts/kubezero-istio-ingress/charts/istio-ingress/values.yaml b/charts/kubezero-istio-ingress/charts/istio-ingress/values.yaml
index cc01ef8b..249b3a81 100644
--- a/charts/kubezero-istio-ingress/charts/istio-ingress/values.yaml
+++ b/charts/kubezero-istio-ingress/charts/istio-ingress/values.yaml
@@ -171,7 +171,7 @@ global:
   hub: docker.io/istio
 
   # Default tag for Istio images.
-  tag: 1.9.0
+  tag: 1.9.1
 
   # Specify image pull policy if default behavior isn't desired.
   # Default behavior: latest images will be Always else IfNotPresent.
diff --git a/charts/kubezero-istio-ingress/charts/istio-private-ingress/Chart.yaml b/charts/kubezero-istio-ingress/charts/istio-private-ingress/Chart.yaml
index fac8f494..37863354 100644
--- a/charts/kubezero-istio-ingress/charts/istio-private-ingress/Chart.yaml
+++ b/charts/kubezero-istio-ingress/charts/istio-private-ingress/Chart.yaml
@@ -1,6 +1,6 @@
 apiVersion: v1
 name: istio-private-ingress
-version: 1.9.0
+version: 1.9.1
 tillerVersion: ">=2.7.2"
 description: Helm chart for deploying Istio gateways
 keywords:
diff --git a/charts/kubezero-istio-ingress/charts/istio-private-ingress/values.yaml b/charts/kubezero-istio-ingress/charts/istio-private-ingress/values.yaml
index cc01ef8b..249b3a81 100644
--- a/charts/kubezero-istio-ingress/charts/istio-private-ingress/values.yaml
+++ b/charts/kubezero-istio-ingress/charts/istio-private-ingress/values.yaml
@@ -171,7 +171,7 @@ global:
   hub: docker.io/istio
 
   # Default tag for Istio images.
-  tag: 1.9.0
+  tag: 1.9.1
 
   # Specify image pull policy if default behavior isn't desired.
   # Default behavior: latest images will be Always else IfNotPresent.
diff --git a/charts/kubezero-istio/charts/base/Chart.yaml b/charts/kubezero-istio/charts/base/Chart.yaml
index 8cf22dc7..e6142de0 100644
--- a/charts/kubezero-istio/charts/base/Chart.yaml
+++ b/charts/kubezero-istio/charts/base/Chart.yaml
@@ -1,6 +1,6 @@
 apiVersion: v1
 name: base
-version: 1.9.0
+version: 1.9.1
 tillerVersion: ">=2.7.2"
 description: Helm chart for deploying Istio cluster resources and CRDs
 keywords:
diff --git a/charts/kubezero-istio/charts/istio-discovery/Chart.yaml b/charts/kubezero-istio/charts/istio-discovery/Chart.yaml
index 60e1a494..a43db08d 100644
--- a/charts/kubezero-istio/charts/istio-discovery/Chart.yaml
+++ b/charts/kubezero-istio/charts/istio-discovery/Chart.yaml
@@ -1,6 +1,6 @@
 apiVersion: v1
 name: istio-discovery
-version: 1.9.0
+version: 1.9.1
 tillerVersion: ">=2.7.2"
 description: Helm chart for istio control plane
 keywords:
diff --git a/charts/kubezero-istio/charts/istio-discovery/values.yaml b/charts/kubezero-istio/charts/istio-discovery/values.yaml
index 5dab58df..6491504f 100644
--- a/charts/kubezero-istio/charts/istio-discovery/values.yaml
+++ b/charts/kubezero-istio/charts/istio-discovery/values.yaml
@@ -232,7 +232,7 @@ global:
   # Dev builds from prow are on gcr.io
   hub: docker.io/istio
   # Default tag for Istio images.
-  tag: 1.9.0
+  tag: 1.9.1
 
   # Specify image pull policy if default behavior isn't desired.
   # Default behavior: latest images will be Always else IfNotPresent.
diff --git a/charts/kubezero-istio/update.sh b/charts/kubezero-istio/update.sh
index 00d385eb..db27e799 100755
--- a/charts/kubezero-istio/update.sh
+++ b/charts/kubezero-istio/update.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 set -ex
 
-export ISTIO_VERSION=1.9.0
+export ISTIO_VERSION=1.9.1
 
 if [ ! -d istio-$ISTIO_VERSION ]; then
   NAME="istio-$ISTIO_VERSION"