diff --git a/packages/react-native-renderer/src/ReactNativeTypes.js b/packages/react-native-renderer/src/ReactNativeTypes.js
index 8192371af827e..4f42833511d2c 100644
--- a/packages/react-native-renderer/src/ReactNativeTypes.js
+++ b/packages/react-native-renderer/src/ReactNativeTypes.js
@@ -210,6 +210,7 @@ export type ReactFabricType = {
     element: Element<ElementType>,
     containerTag: number,
     callback: ?() => void,
+    concurrentRoot: ?boolean,
   ): ?ElementRef<ElementType>,
   unmountComponentAtNode(containerTag: number): void,
   ...
diff --git a/scripts/rollup/shims/react-native/ReactFabric.js b/scripts/rollup/shims/react-native/ReactFabric.js
index 536ce9a6f30b6..e0692ad6eb00f 100644
--- a/scripts/rollup/shims/react-native/ReactFabric.js
+++ b/scripts/rollup/shims/react-native/ReactFabric.js
@@ -12,8 +12,7 @@
 
 import {BatchedBridge} from 'react-native/Libraries/ReactPrivate/ReactNativePrivateInterface';
 
-// TODO @sema: Adjust types
-import type {ReactNativeType} from './ReactNativeTypes';
+import type {ReactFabricType} from './ReactNativeTypes';
 
 let ReactFabric;
 
@@ -29,4 +28,4 @@ if (global.RN$Bridgeless) {
   BatchedBridge.registerCallableModule('ReactFabric', ReactFabric);
 }
 
-module.exports = (ReactFabric: ReactNativeType);
+module.exports = (ReactFabric: ReactFabricType);