diff --git a/website/package-lock.json b/website/package-lock.json
index 5cc9c9f643..dd3f8a10e0 100644
--- a/website/package-lock.json
+++ b/website/package-lock.json
@@ -20,7 +20,7 @@
         "nextra-theme-docs": "latest",
         "react": "^18.2.0",
         "react-dom": "^18.2.0",
-        "typescript": "^5.1.3",
+        "typescript": "5.1.6",
         "typia": "^4.1.12"
       },
       "devDependencies": {
@@ -5751,9 +5751,9 @@
       }
     },
     "node_modules/typescript": {
-      "version": "5.1.3",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.1.3.tgz",
-      "integrity": "sha512-XH627E9vkeqhlZFQuL+UsyAXEnibT0kWR2FWONlr4sTjvxyJYnyefgrkyECLzM5NenmKzRAy2rR/OlYLA1HkZw==",
+      "version": "5.1.6",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.1.6.tgz",
+      "integrity": "sha512-zaWCozRZ6DLEWAWFrVDz1H6FVXzUSfTy5FUMWsQlU8Ym5JP9eO4xkTIROFCQvhQf61z6O/G6ugw3SgAnvvm+HA==",
       "bin": {
         "tsc": "bin/tsc",
         "tsserver": "bin/tsserver"
diff --git a/website/package.json b/website/package.json
index f261d6f918..2bdfd6c71a 100644
--- a/website/package.json
+++ b/website/package.json
@@ -4,7 +4,7 @@
   "description": "Typia Guide Documents",
   "private": true,
   "scripts": {
-    "build": "rimraf .next && rimraf .out && next build && next export && next-sitemap",
+    "build": "rimraf .next && rimraf out && next build && next export && next-sitemap",
     "deploy": "node build/deploy",
     "dev": "npm run prepare && next dev",
     "prepare": "node build/raw"
@@ -30,7 +30,7 @@
     "nextra-theme-docs": "latest",
     "react": "^18.2.0",
     "react-dom": "^18.2.0",
-    "typescript": "^5.1.3",
+    "typescript": "5.1.6",
     "typia": "^4.1.12"
   },
   "devDependencies": {
diff --git a/website/public/sitemap-0.xml b/website/public/sitemap-0.xml
index 0ac3566ba6..67855835b8 100644
--- a/website/public/sitemap-0.xml
+++ b/website/public/sitemap-0.xml
@@ -1,20 +1,20 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:news="http://www.google.com/schemas/sitemap-news/0.9" xmlns:xhtml="http://www.w3.org/1999/xhtml" xmlns:mobile="http://www.google.com/schemas/sitemap-mobile/1.0" xmlns:image="http://www.google.com/schemas/sitemap-image/1.1" xmlns:video="http://www.google.com/schemas/sitemap-video/1.1">
-<url><loc>https://typia.io/</loc><lastmod>2023-07-31T06:07:58.937Z</lastmod><changefreq>daily</changefreq><priority>0.7</priority></url>
-<url><loc>https://typia.io/docs/</loc><lastmod>2023-07-31T06:07:58.937Z</lastmod><changefreq>daily</changefreq><priority>0.7</priority></url>
-<url><loc>https://typia.io/docs/json/parse/</loc><lastmod>2023-07-31T06:07:58.937Z</lastmod><changefreq>daily</changefreq><priority>0.7</priority></url>
-<url><loc>https://typia.io/docs/json/schema/</loc><lastmod>2023-07-31T06:07:58.937Z</lastmod><changefreq>daily</changefreq><priority>0.7</priority></url>
-<url><loc>https://typia.io/docs/json/stringify/</loc><lastmod>2023-07-31T06:07:58.937Z</lastmod><changefreq>daily</changefreq><priority>0.7</priority></url>
-<url><loc>https://typia.io/docs/miscellaneous/</loc><lastmod>2023-07-31T06:07:58.937Z</lastmod><changefreq>daily</changefreq><priority>0.7</priority></url>
-<url><loc>https://typia.io/docs/pure/</loc><lastmod>2023-07-31T06:07:58.937Z</lastmod><changefreq>daily</changefreq><priority>0.7</priority></url>
-<url><loc>https://typia.io/docs/random/</loc><lastmod>2023-07-31T06:07:58.937Z</lastmod><changefreq>daily</changefreq><priority>0.7</priority></url>
-<url><loc>https://typia.io/docs/setup/</loc><lastmod>2023-07-31T06:07:58.937Z</lastmod><changefreq>daily</changefreq><priority>0.7</priority></url>
-<url><loc>https://typia.io/docs/utilization/nestjs/</loc><lastmod>2023-07-31T06:07:58.937Z</lastmod><changefreq>daily</changefreq><priority>0.7</priority></url>
-<url><loc>https://typia.io/docs/utilization/prisma/</loc><lastmod>2023-07-31T06:07:58.937Z</lastmod><changefreq>daily</changefreq><priority>0.7</priority></url>
-<url><loc>https://typia.io/docs/utilization/trpc/</loc><lastmod>2023-07-31T06:07:58.937Z</lastmod><changefreq>daily</changefreq><priority>0.7</priority></url>
-<url><loc>https://typia.io/docs/validators/assert/</loc><lastmod>2023-07-31T06:07:58.937Z</lastmod><changefreq>daily</changefreq><priority>0.7</priority></url>
-<url><loc>https://typia.io/docs/validators/comment-tags/</loc><lastmod>2023-07-31T06:07:58.937Z</lastmod><changefreq>daily</changefreq><priority>0.7</priority></url>
-<url><loc>https://typia.io/docs/validators/is/</loc><lastmod>2023-07-31T06:07:58.937Z</lastmod><changefreq>daily</changefreq><priority>0.7</priority></url>
-<url><loc>https://typia.io/docs/validators/validate/</loc><lastmod>2023-07-31T06:07:58.937Z</lastmod><changefreq>daily</changefreq><priority>0.7</priority></url>
-<url><loc>https://typia.io/playground/</loc><lastmod>2023-07-31T06:07:58.937Z</lastmod><changefreq>daily</changefreq><priority>0.7</priority></url>
+<url><loc>https://typia.io/</loc><lastmod>2023-07-31T08:47:27.998Z</lastmod><changefreq>daily</changefreq><priority>0.7</priority></url>
+<url><loc>https://typia.io/docs/</loc><lastmod>2023-07-31T08:47:27.998Z</lastmod><changefreq>daily</changefreq><priority>0.7</priority></url>
+<url><loc>https://typia.io/docs/json/parse/</loc><lastmod>2023-07-31T08:47:27.998Z</lastmod><changefreq>daily</changefreq><priority>0.7</priority></url>
+<url><loc>https://typia.io/docs/json/schema/</loc><lastmod>2023-07-31T08:47:27.998Z</lastmod><changefreq>daily</changefreq><priority>0.7</priority></url>
+<url><loc>https://typia.io/docs/json/stringify/</loc><lastmod>2023-07-31T08:47:27.998Z</lastmod><changefreq>daily</changefreq><priority>0.7</priority></url>
+<url><loc>https://typia.io/docs/miscellaneous/</loc><lastmod>2023-07-31T08:47:27.998Z</lastmod><changefreq>daily</changefreq><priority>0.7</priority></url>
+<url><loc>https://typia.io/docs/pure/</loc><lastmod>2023-07-31T08:47:27.998Z</lastmod><changefreq>daily</changefreq><priority>0.7</priority></url>
+<url><loc>https://typia.io/docs/random/</loc><lastmod>2023-07-31T08:47:27.998Z</lastmod><changefreq>daily</changefreq><priority>0.7</priority></url>
+<url><loc>https://typia.io/docs/setup/</loc><lastmod>2023-07-31T08:47:27.998Z</lastmod><changefreq>daily</changefreq><priority>0.7</priority></url>
+<url><loc>https://typia.io/docs/utilization/nestjs/</loc><lastmod>2023-07-31T08:47:27.998Z</lastmod><changefreq>daily</changefreq><priority>0.7</priority></url>
+<url><loc>https://typia.io/docs/utilization/prisma/</loc><lastmod>2023-07-31T08:47:27.998Z</lastmod><changefreq>daily</changefreq><priority>0.7</priority></url>
+<url><loc>https://typia.io/docs/utilization/trpc/</loc><lastmod>2023-07-31T08:47:27.998Z</lastmod><changefreq>daily</changefreq><priority>0.7</priority></url>
+<url><loc>https://typia.io/docs/validators/assert/</loc><lastmod>2023-07-31T08:47:27.998Z</lastmod><changefreq>daily</changefreq><priority>0.7</priority></url>
+<url><loc>https://typia.io/docs/validators/comment-tags/</loc><lastmod>2023-07-31T08:47:27.998Z</lastmod><changefreq>daily</changefreq><priority>0.7</priority></url>
+<url><loc>https://typia.io/docs/validators/is/</loc><lastmod>2023-07-31T08:47:27.998Z</lastmod><changefreq>daily</changefreq><priority>0.7</priority></url>
+<url><loc>https://typia.io/docs/validators/validate/</loc><lastmod>2023-07-31T08:47:27.998Z</lastmod><changefreq>daily</changefreq><priority>0.7</priority></url>
+<url><loc>https://typia.io/playground/</loc><lastmod>2023-07-31T08:47:27.998Z</lastmod><changefreq>daily</changefreq><priority>0.7</priority></url>
 </urlset>
\ No newline at end of file
diff --git a/website/src/utils/Compiler.ts b/website/src/utils/Compiler.ts
index 487835b0f4..68ac9732f0 100644
--- a/website/src/utils/Compiler.ts
+++ b/website/src/utils/Compiler.ts
@@ -51,7 +51,8 @@ export namespace Compiler {
         },
 
         // ADDITIONAL OPTIONS
-        getDefaultLibFileName: () => "node_modules/typescript/lib/lib.es5.d.ts",
+        getDefaultLibFileName: () =>
+          "node_modules/typescript/lib/lib.es2015.d.ts",
         directoryExists: () => true,
         getCurrentDirectory: () => "",
         getDirectories: () => [],
@@ -101,7 +102,7 @@ export namespace Compiler {
   export const OPTIONS: ts.CompilerOptions = {
     target: ts.ScriptTarget.ES2015,
     module: ts.ModuleKind.CommonJS,
-    lib: ["DOM", "ES5"],
+    // lib: ["DOM", "ES2015"],
     esModuleInterop: true,
     downlevelIteration: true,
     forceConsistentCasingInFileNames: true,