diff --git a/syntax/php.vim b/syntax/php.vim
index 0e432b6..299fa6f 100644
--- a/syntax/php.vim
+++ b/syntax/php.vim
@@ -324,6 +324,8 @@ syn keyword phpClasses __PHP_Incomplete_Class php_user_filter Directory containe
 
 " tokenizer
 syn keyword phpFunctions token_get_all token_name contained
+" test_helpers
+syn keyword phpFunctions unset_new_overload set_new_overload unset_exit_overload set_exit_overload rename_method rename_function contained
 " wddx
 syn keyword phpFunctions wddx_serialize_value wddx_serialize_vars wddx_packet_start wddx_packet_end wddx_add_vars wddx_deserialize contained
 " xdebug
diff --git a/update_syntax.php b/update_syntax.php
index 40cd58a..216fb17 100644
--- a/update_syntax.php
+++ b/update_syntax.php
@@ -95,6 +95,7 @@ $allowed_extensions = array(
 	'sqlite3',
 	'standard',
 	'tokenizer',
+	'test_helpers',
 	'wddx',
 	'xdebug',
 	'xml',