diff --git a/packages/react-navigation/flow/react-navigation.js b/packages/react-navigation/flow/react-navigation.js
index b43f0dd0..07c31950 100644
--- a/packages/react-navigation/flow/react-navigation.js
+++ b/packages/react-navigation/flow/react-navigation.js
@@ -882,7 +882,8 @@ declare module 'react-navigation' {
       n?: number,
       immediate?: boolean,
     }) => NavigationPopAction,
-    popToTop: (payload: {
+    popToTop: (payload?: {
+      key?: string,
       immediate?: boolean,
     }) => NavigationPopToTopAction,
     push: (payload: {
diff --git a/packages/react-navigation/typescript/react-navigation.d.ts b/packages/react-navigation/typescript/react-navigation.d.ts
index 0a2f45a8..4789b7ea 100644
--- a/packages/react-navigation/typescript/react-navigation.d.ts
+++ b/packages/react-navigation/typescript/react-navigation.d.ts
@@ -1226,7 +1226,7 @@ declare module 'react-navigation' {
 
     function pop(options: NavigationPopActionPayload): NavigationPopAction;
     function popToTop(
-      options: NavigationPopToTopActionPayload
+      options?: NavigationPopToTopActionPayload
     ): NavigationPopToTopAction;
 
     function push(options: NavigationPushActionPayload): NavigationPushAction;