diff --git a/lib/src/user_attributes.dart b/lib/src/user_attributes.dart
index 5972ad5..c67a91b 100644
--- a/lib/src/user_attributes.dart
+++ b/lib/src/user_attributes.dart
@@ -1,14 +1,22 @@
 class UserAttributes {
   String? email;
+  String? phone;
   String? password;
   String? emailChangeToken;
   dynamic data;
 
-  UserAttributes({this.email, this.password, this.emailChangeToken, this.data});
+  UserAttributes({
+    this.email,
+    this.phone,
+    this.password,
+    this.emailChangeToken,
+    this.data,
+  });
 
   Map<String, dynamic> toJson() {
     final Map<String, dynamic> values = {};
     if (email != null) values['email'] = email;
+    if (phone != null) values['phone'] = phone;
     if (password != null) values['password'] = password;
     if (emailChangeToken != null) {
       values['email_change_token'] = emailChangeToken;