diff --git a/src/languages/lib/css-shared.js b/src/languages/lib/css-shared.js
index 381d984d1e..76fdfbde8b 100644
--- a/src/languages/lib/css-shared.js
+++ b/src/languages/lib/css-shared.js
@@ -446,6 +446,23 @@ export const ATTRIBUTES = [
   'container-type',
   'content',
   'content-visibility',
+  'corner-bottom-left-shape',
+  'corner-bottom-right-shape',
+  'corner-bottom-shape',
+  'corner-block-end-shape',
+  'corner-block-start-shape',
+  'corner-end-end-shape',
+  'corner-end-start-shape',
+  'corner-inline-end-shape',
+  'corner-inline-start-shape',
+  'corner-left-shape',
+  'corner-right-shape',
+  'corner-shape',
+  'corner-start-end-shape',
+  'corner-start-start-shape',
+  'corner-top-left-shape',
+  'corner-top-right-shape',
+  'corner-top-shape',
   'counter-increment',
   'counter-reset',
   'counter-set',