diff --git a/__mocks__/@react-navigation/native/index.js b/__mocks__/@react-navigation/native/index.ts
similarity index 67%
rename from __mocks__/@react-navigation/native/index.js
rename to __mocks__/@react-navigation/native/index.ts
index 09abd0d02bf9..aa8067a1c862 100644
--- a/__mocks__/@react-navigation/native/index.js
+++ b/__mocks__/@react-navigation/native/index.ts
@@ -1,7 +1,7 @@
 import {useIsFocused as realUseIsFocused} from '@react-navigation/native';
 
 // We only want this mocked for storybook, not jest
-const useIsFocused = process.env.NODE_ENV === 'test' ? realUseIsFocused : () => true;
+const useIsFocused: typeof realUseIsFocused = process.env.NODE_ENV === 'test' ? realUseIsFocused : () => true;
 
 export * from '@react-navigation/core';
 export * from '@react-navigation/native';