diff --git a/samples/vllm/ui/package-lock.json b/samples/vllm/ui/package-lock.json
index 67f3333a..b06a6c65 100644
--- a/samples/vllm/ui/package-lock.json
+++ b/samples/vllm/ui/package-lock.json
@@ -14,7 +14,7 @@
         "react": "^18",
         "react-dom": "^18",
         "react-markdown": "^9.0.1",
-        "zod": "^3.22.4"
+        "zod": "^4.6.6"
       },
       "devDependencies": {
         "@types/node": "^20",
@@ -6643,9 +6643,10 @@
       }
     },
     "node_modules/zod": {
-      "version": "3.22.4",
-      "resolved": "https://registry.npmjs.org/zod/-/zod-3.22.4.tgz",
-      "integrity": "sha512-iC+8Io04lddc+mVqQ9AZ7OQ2MrUKGN+oIQyq1vemgt46jwCwLfhq7/pwnBnNXXXZb8VTVLKwp9EDkx+ryxIWmg==",
+      "version": "4.6.6",
+      "resolved": "https://registry.npmjs.org/zod/-/zod-4.6.6.tgz",
+      "integrity": "sha512-4UmzQUF5fxvfcYHlbjBmejU+w+hbDnWFx4aS8kBx7nPBHcO2SqPbpAG8snbdg+Xse4pRefR98hgjFgIMCI/UhA==",
+      "license": "MIT",
       "funding": {
         "url": "https://github.com/sponsors/colinhacks"
       }
diff --git a/samples/vllm/ui/package.json b/samples/vllm/ui/package.json
index 30d8a7bd..e9915066 100644
--- a/samples/vllm/ui/package.json
+++ b/samples/vllm/ui/package.json
@@ -15,7 +15,7 @@
     "react": "^18",
     "react-dom": "^18",
     "react-markdown": "^9.0.1",
-    "zod": "^3.22.4"
+    "zod": "^4.6.6"
   },
   "devDependencies": {
     "@types/node": "^20",