diff --git a/docs/advanced-features/preview-mode.md b/docs/advanced-features/preview-mode.md
index 1e8467620cf3b33cbbc072d53cc2fa3cc0b5c272..a1b05fb09c651bca88c79315bbe122e185c0b791 100644
--- a/docs/advanced-features/preview-mode.md
+++ b/docs/advanced-features/preview-mode.md
@@ -203,6 +203,18 @@ You can pass an object to `setPreviewData` and have it be available in `getStati
 
 The preview mode works on `getServerSideProps` as well. It will also be available on the `context` object containing `preview` and `previewData`.
 
+### Works with API Routes
+
+API Routes will have access to `preview` and `previewData` under the request object. For example:
+
+```js
+export default function myApiRoute(req, res) {
+  const isPreview = req.preview
+  const previewData = req.previewData
+  // ...
+}
+```
+
 ### Unique per `next build`
 
 Both the bypass cookie value and the private key for encrypting the `previewData` change when `next build` is completed.