diff --git a/scripts/build-assets.mjs b/scripts/build-assets.mjs
index 1ffcec8aa3..becf046c60 100644
--- a/scripts/build-assets.mjs
+++ b/scripts/build-assets.mjs
@@ -9,10 +9,12 @@ import cssnano from 'cssnano';
 import postcss from 'postcss';
 import * as terser from 'terser';
 
-import locales from '../locales/index.js';
+import { build as buildLocales } from '../locales/index.js';
 import generateDTS from '../locales/generateDTS.js';
 import meta from '../package.json' assert { type: "json" };
 
+let locales = buildLocales();
+
 async function copyFrontendFonts() {
   await fs.cp('./packages/frontend/node_modules/three/examples/fonts', './built/_frontend_dist_/fonts', { dereference: true, recursive: true });
 }
@@ -89,10 +91,23 @@ async function build() {
 await build();
 
 if (process.argv.includes("--watch")) {
-  const watcher = fs.watch('./packages', { recursive: true });
-  for await (const event of watcher) {
-    if (/^[a-z]+\/src/.test(event.filename)) {
-      await build();
-    }
-  }
+	const watchers = [
+		fs.watch('./packages', { recursive: true }),
+		fs.watch('./locales'),
+	];
+
+	while (true) {
+		const event = (await Promise.race(watchers.map(watcher => watcher.next())))?.value;
+		if (!event) continue;
+		const filename = event.filename?.replaceAll('\\', '/');
+
+		if (/^[a-z]+\/src/.test(filename)) {
+			await build();
+		}
+
+		if (/[a-z]+-[A-Z]+\.yml/.test(filename)) {
+			locales = buildLocales();
+			await copyFrontendLocales()
+		}
+	}
 }