diff --git a/types/react-native-touch-id/index.d.ts b/types/react-native-touch-id/index.d.ts
index e222b87b59..d4224bf28b 100644
--- a/types/react-native-touch-id/index.d.ts
+++ b/types/react-native-touch-id/index.d.ts
@@ -1,7 +1,8 @@
-// Type definitions for react-native-touch-id 4.0.0
+// Type definitions for react-native-touch-id 4.0.2
 // Project: https://github.com/naoufal/react-native-touch-id
 // Definitions by: huhuanming <https://github.com/huhuanming>
 //                 Nikolay Polukhin <https://github.com/gazaret>
+//                 Jin Shin <https://github.com/jinshin1013>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 declare module 'react-native-touch-id' {
@@ -15,8 +16,9 @@ declare module 'react-native-touch-id' {
   }
 
   export interface AuthenticateConfig {
-    title: string;
-    color: string;
+    title?: string;
+    color?: string;
+    fallbackTitle: string;
   }
 
   export const isSupported: () => Promise<boolean | string | TouchIDError>;
diff --git a/types/react-native-touch-id/react-native-touch-id-tests.ts b/types/react-native-touch-id/react-native-touch-id-tests.ts
index 8ad30c1390..7774bded96 100644
--- a/types/react-native-touch-id/react-native-touch-id-tests.ts
+++ b/types/react-native-touch-id/react-native-touch-id-tests.ts
@@ -6,5 +6,6 @@ authenticate('reason').then((isOk: boolean) => {}).catch((error: TouchIDError) =
 
 authenticate('reason', {
     title: 'Authentication Required',
-    color: '#1306ff'
+    color: '#1306ff',
+    fallbackTitle: 'Fallback Authentication Method'
 }).then((isOk: boolean) => {}).catch((error: TouchIDError) => {});