diff --git a/README.md b/README.md
index 3d4e801..2a4c6dd 100644
--- a/README.md
+++ b/README.md
@@ -10,10 +10,20 @@ Convert image file to data URI. Support `.png`,`.gif`,`.jpg`,`.jpeg`,`.bm`,`.bmp
 
 ### Install
 
+This package is [ESM only](https://gist.github.com/sindresorhus/a39789f98801d908bbc7ff3ecc99d99c): Node 12+ is needed to use it and it must be import instead of require.
+
 ```bash
 npm i image2uri
 ```
 
+```js
+const recursiveReaddirFiles = await import('image2uri');
+
+// Fix compiling in typescript.
+// https://github.com/microsoft/TypeScript/issues/43329#issuecomment-922544562
+const { getExt, recursiveReaddirFiles } = await (Function('return import("image2uri")')()) as Promise<typeof import("image2uri")>;
+```
+
 ### Basic Usage
 
 ```js
@@ -39,6 +49,20 @@ npm run build # compile .ts files.
 npm run start
 ```
 
+### Related
+
+- [recursive-readdir-files](https://github.com/jaywcjlove/recursive-readdir-files) Node.js module to list all files in a directory or any subdirectories.
+
+## Contributors
+
+As always, thanks to our amazing contributors!
+
+<a href="https://github.com/jaywcjlove/image2uri/graphs/contributors">
+  <img src="https://jaywcjlove.github.io/image2uri/CONTRIBUTORS.svg" />
+</a>
+
+Made with [action-contributors](https://github.com/jaywcjlove/github-action-contributors).
+
 ### License
 
 Licensed under the MIT License.