diff --git a/libraries/src/Filter/InputFilter.php b/libraries/src/Filter/InputFilter.php
index 3f82eb2c9a4d1..42f89f25698bc 100644
--- a/libraries/src/Filter/InputFilter.php
+++ b/libraries/src/Filter/InputFilter.php
@@ -508,7 +508,7 @@ public static function isSafeFile($file, $options = array())
 
 			// Which file extensions to scan for short tags
 			'shorttag_extensions'        => array(
-				'inc', 'phps', 'class', 'php3', 'php4', 'php5', 'txt', 'dat', 'tpl', 'tmpl',
+				'inc', 'phps', 'class', 'php3', 'php4', 'php5', 'php6', 'php7', 'php8', 'txt', 'dat', 'tpl', 'tmpl',
 			),
 
 			// Forbidden extensions anywhere in the content