diff --git a/src/Exceptions.php b/src/Exceptions.php
index 2a40a1a..965c226 100644
--- a/src/Exceptions.php
+++ b/src/Exceptions.php
@@ -35,3 +35,5 @@ class DatabaseError extends AuthError {}
 class MissingCallbackError extends AuthError {}
 
 class HeadersAlreadySentError extends AuthError {}
+
+class EmailOrUsernameRequiredError extends AuthError {}