diff --git a/scripts/check-doc-links.mjs b/scripts/check-doc-links.mjs
index a47d2dd..b2c1512 100644
--- a/scripts/check-doc-links.mjs
+++ b/scripts/check-doc-links.mjs
@@ -49,7 +49,9 @@ function headingSlugs(filePath) {
   return slugs;
 }
 
-const LINK_RE = /\[(?:[^\]]*)\]\(([^)]+)\)/g;
+// Match `[label](url)` where url may contain one level of balanced parens
+// (e.g. Next.js route groups like `app/(app)/...`).
+const LINK_RE = /\[(?:[^\]]*)\]\(((?:[^()]+|\([^()]*\))+)\)/g;
 
 function checkFile(filePath) {
   const content = readFileSync(filePath, 'utf8');