diff --git a/dmz/istio-system/Chart.yaml b/dmz/istio-system/Chart.yaml
index 8a8d342..1794b71 100644
--- a/dmz/istio-system/Chart.yaml
+++ b/dmz/istio-system/Chart.yaml
@@ -8,7 +8,7 @@ appVersion: 0.0.1
 dependencies:
   - name: base
     repository: https://istio-release.storage.googleapis.com/charts
-    version: 1.25.1
+    version: 1.26.0
   - name: istiod
     repository: https://istio-release.storage.googleapis.com/charts
     version: 1.25.1
diff --git a/infra/istio-system/Chart.yaml b/infra/istio-system/Chart.yaml
index f56ad65..846d267 100644
--- a/infra/istio-system/Chart.yaml
+++ b/infra/istio-system/Chart.yaml
@@ -8,7 +8,7 @@ appVersion: 0.0.1
 dependencies:
 - name: base
   repository: https://istio-release.storage.googleapis.com/charts
-  version: 1.25.1
+  version: 1.26.0
 - name: istiod
   repository: https://istio-release.storage.googleapis.com/charts
   version: 1.25.1