diff --git a/types/auth0-js/auth0-js-tests.ts b/types/auth0-js/auth0-js-tests.ts
index 5356dc605a..73426dbd37 100644
--- a/types/auth0-js/auth0-js-tests.ts
+++ b/types/auth0-js/auth0-js-tests.ts
@@ -130,7 +130,10 @@ webAuth.signupAndAuthorize({
     connection: 'the_connection',
     email: 'me@example.com',
     password: '123456',
-    scope: 'openid'
+    scope: 'openid',
+    user_metadata: {
+        foo: 'bar'
+    }
 }, function (err, data) {
 
 });
diff --git a/types/auth0-js/index.d.ts b/types/auth0-js/index.d.ts
index 4e6afded1d..37914e887f 100644
--- a/types/auth0-js/index.d.ts
+++ b/types/auth0-js/index.d.ts
@@ -1,6 +1,7 @@
 // Type definitions for Auth0.js 8.6
 // Project: https://github.com/auth0/auth0.js
 // Definitions by: Adrian Chia <https://github.com/adrianchia>
+//                 Matt Durrant <https://github.com/mdurrant>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 export as namespace auth0;
@@ -624,6 +625,7 @@ interface DbSignUpOptions {
     password: string;
     connection: string;
     scope?: string;
+    user_metadata?: any;
 }
 
 interface ParseHashOptions {