diff --git a/src/content/reference/react-dom/client/createRoot.md b/src/content/reference/react-dom/client/createRoot.md
index dbf37fb7f4b..061276e5143 100644
--- a/src/content/reference/react-dom/client/createRoot.md
+++ b/src/content/reference/react-dom/client/createRoot.md
@@ -45,7 +45,7 @@ An app fully built with React will usually only have one `createRoot` call for i
 
 * **optional** `options`: An object with options for this React root.
 
-  * **optional** `onCaughtError`: Callback called when React catches an error in an Error Boundary. Called with the `error` caught by the Error Boundary, and an `errorInfo` object containing the `componentStack`.
+  * **optional** `onCaughtError`: Callback called when React catches an error in an Error Boundary. Called with the `error` caught by the Error Boundary, and an `errorInfo` object containing the `componentStack` and the `errorBoundary` instance that caught the error.
   * **optional** `onUncaughtError`: Callback called when an error is thrown and not caught by an Error Boundary. Called with the `error` that was thrown, and an `errorInfo` object containing the `componentStack`.
   * **optional** `onRecoverableError`: Callback called when React automatically recovers from errors. Called with an `error` React throws, and an `errorInfo` object containing the `componentStack`. Some recoverable errors may include the original error cause as `error.cause`.
   * **optional** `identifierPrefix`: A string prefix React uses for IDs generated by [`useId`.](/reference/react/useId) Useful to avoid conflicts when using multiple roots on the same page.
@@ -377,7 +377,7 @@ const root = createRoot(container, {
 The <CodeStep step={1}>onCaughtError</CodeStep> option is a function called with two arguments:
 
 1. The <CodeStep step={2}>error</CodeStep> that was thrown.
-2. An <CodeStep step={3}>errorInfo</CodeStep> object that contains the <CodeStep step={4}>componentStack</CodeStep> of the error.
+2. An <CodeStep step={3}>errorInfo</CodeStep> object that contains the <CodeStep step={4}>componentStack</CodeStep> of the error and the `errorBoundary` instance that caught it.
 
 Together with `onUncaughtError` and `onRecoverableError`, you can implement your own error reporting system:
 
diff --git a/src/content/reference/react-dom/client/hydrateRoot.md b/src/content/reference/react-dom/client/hydrateRoot.md
index 063162d357b..037841c77b2 100644
--- a/src/content/reference/react-dom/client/hydrateRoot.md
+++ b/src/content/reference/react-dom/client/hydrateRoot.md
@@ -41,7 +41,7 @@ React will attach to the HTML that exists inside the `domNode`, and take over ma
 
 * **optional** `options`: An object with options for this React root.
 
-  * **optional** `onCaughtError`: Callback called when React catches an error in an Error Boundary. Called with the `error` caught by the Error Boundary, and an `errorInfo` object containing the `componentStack`.
+  * **optional** `onCaughtError`: Callback called when React catches an error in an Error Boundary. Called with the `error` caught by the Error Boundary, and an `errorInfo` object containing the `componentStack` and the `errorBoundary` instance that caught the error.
   * **optional** `onUncaughtError`: Callback called when an error is thrown and not caught by an Error Boundary. Called with the `error` that was thrown and an `errorInfo` object containing the `componentStack`.
   * **optional** `onRecoverableError`: Callback called when React automatically recovers from errors. Called with the `error` React throws, and an `errorInfo` object containing the `componentStack`. Some recoverable errors may include the original error cause as `error.cause`.
   * **optional** `identifierPrefix`: A string prefix React uses for IDs generated by [`useId`.](/reference/react/useId) Useful to avoid conflicts when using multiple roots on the same page. Must be the same prefix as used on the server.
@@ -407,7 +407,7 @@ const root = hydrateRoot(container, <App />, {
 The <CodeStep step={1}>onCaughtError</CodeStep> option is a function called with two arguments:
 
 1. The <CodeStep step={2}>error</CodeStep> that was thrown.
-2. An <CodeStep step={3}>errorInfo</CodeStep> object that contains the <CodeStep step={4}>componentStack</CodeStep> of the error.
+2. An <CodeStep step={3}>errorInfo</CodeStep> object that contains the <CodeStep step={4}>componentStack</CodeStep> of the error and the `errorBoundary` instance that caught it.
 
 Together with `onUncaughtError` and `onRecoverableError`, you can implement your own error reporting system: