diff --git a/config/envs/development/kustomization.yaml b/config/envs/development/kustomization.yaml
index 8df7dacf..6c546d80 100644
--- a/config/envs/development/kustomization.yaml
+++ b/config/envs/development/kustomization.yaml
@@ -68,7 +68,7 @@ images:
     newTag: 11.5-alpine
   - name: envoyproxy/envoy-alpine
     newName: docker.io/envoyproxy/envoy-alpine
-    newTag: v1.15.0
+    newTag: v1.21.4
   - name: micro/micro
     newName: docker.pkg.github.com/xmlking/micro-starter-kit/micro
     newTag: v2.9.3
diff --git a/config/envs/local/kustomization.yaml b/config/envs/local/kustomization.yaml
index 7757aca6..5876361d 100644
--- a/config/envs/local/kustomization.yaml
+++ b/config/envs/local/kustomization.yaml
@@ -61,7 +61,7 @@ images:
     newTag: 11.5-alpine
   - name: envoyproxy/envoy-alpine
     newName: docker.io/envoyproxy/envoy-alpine
-    newTag: v1.15.0
+    newTag: v1.21.4
   - name: micro/micro
     newName: docker.pkg.github.com/xmlking/micro-starter-kit/micro
     newTag: v2.9.3
diff --git a/config/envs/production/kustomization.yaml b/config/envs/production/kustomization.yaml
index 4c242685..92b65ff4 100644
--- a/config/envs/production/kustomization.yaml
+++ b/config/envs/production/kustomization.yaml
@@ -74,7 +74,7 @@ images:
     newTag: 11.5-alpine
   - name: envoyproxy/envoy-alpine
     newName: docker.io/envoyproxy/envoy-alpine
-    newTag: v1.15.0
+    newTag: v1.21.4
   - name: micro/micro
     newName: docker.pkg.github.com/xmlking/micro-starter-kit/micro
     newTag: v2.9.3
diff --git a/config/envs/staging/kustomization.yaml b/config/envs/staging/kustomization.yaml
index 2bb5e55a..73341e8e 100644
--- a/config/envs/staging/kustomization.yaml
+++ b/config/envs/staging/kustomization.yaml
@@ -62,7 +62,7 @@ images:
     newTag: 11.5-alpine
   - name: envoyproxy/envoy-alpine
     newName: docker.io/envoyproxy/envoy-alpine
-    newTag: v1.15.0
+    newTag: v1.21.4
   - name: micro/micro
     newName: docker.pkg.github.com/xmlking/micro-starter-kit/micro
     newTag: v2.9.3