diff --git a/types/react-navigation/index.d.ts b/types/react-navigation/index.d.ts
index d5f9801b5d..1233ca39e3 100644
--- a/types/react-navigation/index.d.ts
+++ b/types/react-navigation/index.d.ts
@@ -20,7 +20,7 @@
 // TypeScript Version: 2.6
 
 /**
- * Reference: https://github.com/react-navigation/react-navigation/tree/a37473c5e4833f48796ee6c7c9cb4a8ac49d9c06
+ * Reference: https://github.com/react-navigation/react-navigation/tree/3f3ef6485c8932f49fddc3dd2c508629110bf2b6
  *
  * NOTE: Please update the commit/link above when updating to a new Flow
  * react-navigation/flow/react-navigation.js reference, so we can conveniently just look at diffs on
@@ -313,6 +313,7 @@ export interface NavigationStackRouterConfig {
   initialRouteParams?: NavigationParams;
   paths?: NavigationPathsConfig;
   navigationOptions?: NavigationScreenConfig<NavigationScreenOptions>;
+  initialRouteKey?: string;
 }
 
 export type NavigationStackAction =
diff --git a/types/react-navigation/react-navigation-tests.tsx b/types/react-navigation/react-navigation-tests.tsx
index 6b8b5c99e8..b00b0a27fc 100644
--- a/types/react-navigation/react-navigation-tests.tsx
+++ b/types/react-navigation/react-navigation-tests.tsx
@@ -50,6 +50,7 @@ const viewStyle: ViewStyle = {
 };
 
 const ROUTE_NAME_START_SCREEN = "StartScreen";
+const ROUTE_KEY_START_SCREEN = "StartScreen-key";
 
 interface StartScreenNavigationParams {
     id: number;
@@ -131,6 +132,7 @@ export const AppNavigator = StackNavigator(
     routeConfigMap,
     {
         initialRouteName: ROUTE_NAME_START_SCREEN,
+        initialRouteKey: ROUTE_KEY_START_SCREEN,
         initialRouteParams,
         navigationOptions,
     },