diff --git a/package.json b/package.json
index f38cde8..b34b744 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@next2d/builder",
-  "version": "0.0.7",
+  "version": "0.0.8",
   "description": "Multi-platform builder for Next2d Framework, supporting export to various platforms such as macOS, Windows, iOS, Android and Web(HTML)",
   "author": "Toshiyuki Ienaga <ienaga@next2d.app>",
   "license": "MIT",
diff --git a/src/index.ts b/src/index.ts
index 8776815..a1296f5 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -176,12 +176,14 @@ const loadConfig = (): Promise<void> =>
             );
         }
 
+        const ext: string = fs.existsSync(`${process.cwd()}/vite.config.ts`) ? "ts" : "js";
+
         const config: any = await loadConfigFromFile(
             {
                 "command": "build",
                 "mode": "build"
             },
-            `${process.cwd()}/vite.config.ts`
+            `${process.cwd()}/vite.config.${ext}`
         );
 
         // update config