diff --git a/build.js b/build.js
new file mode 100644
index 0000000..be73b5d
--- /dev/null
+++ b/build.js
@@ -0,0 +1,8 @@
+const fs = require("fs");
+
+let file = fs.readFileSync("index.html", "utf-8");
+file = file.replace(
+  '<span class="last-updated"></span>',
+  new Date().toUTCString(),
+);
+fs.writeFileSync("index.html", file);
diff --git a/index.html b/index.html
index 4964ddb..5ddae28 100644
--- a/index.html
+++ b/index.html
@@ -49,7 +49,7 @@
                     <a href="mailto:genshibe@gmail.com">Email</a>
                 </div>
                 <span
-                    >Last updated at <span class="last-updated"></span> | ©️
+                    >Last updated at Tue, 19 Mar 2024 22:56:19 GMT | ©️
                     Licensed under GPL V3 |
                     <a href="https://github.com/GenShibe/genshibe.github.io/"
                         >Source code</a
@@ -63,10 +63,6 @@
                 </select>
             </footer>
         </main>
-        <script>
-            document.querySelector(".last-updated").innerHTML =
-                document.lastModified;
-        </script>
         <script>
             window.addEventListener("DOMContentLoaded", () => {
                 const selector = document.querySelector(".theme-selector");
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..2134b93
--- /dev/null
+++ b/package.json
@@ -0,0 +1,12 @@
+{
+  "name": "genshibe.github.io",
+  "version": "1.0.0",
+  "description": "my personal website lol, it's horrible, but at least it doesn't hurt your eyes :p ### License - everything is licensed under:   [GPLv3](https://www.gnu.org/licenses/gpl-3.0#license-text)",
+  "main": "index.js",
+  "scripts": {
+    "build": "node ./build.js"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC"
+}