diff --git a/docs/02-app/02-api-reference/05-next-config-js/reactStrictMode.mdx b/docs/02-app/02-api-reference/05-next-config-js/reactStrictMode.mdx
index ed92705cd3b9b..d4478784da64f 100644
--- a/docs/02-app/02-api-reference/05-next-config-js/reactStrictMode.mdx
+++ b/docs/02-app/02-api-reference/05-next-config-js/reactStrictMode.mdx
@@ -5,6 +5,8 @@ description: The complete Next.js runtime is now Strict Mode-compliant, learn ho
 
 {/* The content of this doc is shared between the app and pages router. You can use the `<PagesOnly>Content</PagesOnly>` component to add content that is specific to the Pages Router. Any shared content should not be wrapped in a component. */}
 
+> **Good to know**: Since Next.js 13.4, Strict Mode is `true` by default with `app` router, so the above configuration is only necessary for `pages`. You can still disable Strict Mode by setting `reactStrictMode: false`.
+
 > **Suggested**: We strongly suggest you enable Strict Mode in your Next.js application to better prepare your application for the future of React.
 
 React's [Strict Mode](https://react.dev/reference/react/StrictMode) is a development mode only feature for highlighting potential problems in an application. It helps to identify unsafe lifecycles, legacy API usage, and a number of other features.