diff --git a/packages/create-next-app/templates/typescript/README-template.md b/packages/create-next-app/templates/typescript/README-template.md
index b12f3e33e7d5b..384991c969b20 100644
--- a/packages/create-next-app/templates/typescript/README-template.md
+++ b/packages/create-next-app/templates/typescript/README-template.md
@@ -12,9 +12,9 @@ yarn dev
 
 Open [http://localhost:3000](http://localhost:3000) with your browser to see the result.
 
-You can start editing the page by modifying `pages/index.js`. The page auto-updates as you edit the file.
+You can start editing the page by modifying `pages/index.tsx`. The page auto-updates as you edit the file.
 
-[API routes](https://nextjs.org/docs/api-routes/introduction) can be accessed on [http://localhost:3000/api/hello](http://localhost:3000/api/hello). This endpoint can be edited in `pages/api/hello.js`.
+[API routes](https://nextjs.org/docs/api-routes/introduction) can be accessed on [http://localhost:3000/api/hello](http://localhost:3000/api/hello). This endpoint can be edited in `pages/api/hello.tsx`.
 
 The `pages/api` directory is mapped to `/api/*`. Files in this directory are treated as [API routes](https://nextjs.org/docs/api-routes/introduction) instead of React pages.