diff --git a/lib/commons/aria/index.js b/lib/commons/aria/index.js
index 18b4168834..679a0cdf2a 100644
--- a/lib/commons/aria/index.js
+++ b/lib/commons/aria/index.js
@@ -617,7 +617,7 @@ lookupTables.role = {
 	'radio': {
 		type: 'widget',
 		attributes:  {
-			allowed: ['aria-checked', 'aria-selected', 'aria-posinset', 'aria-setsize'],
+			allowed: ['aria-checked', 'aria-selected', 'aria-posinset', 'aria-setsize', 'aria-required'],
 		},
 		owned: null,
 		nameFrom: ['author', 'contents'],