diff --git a/next.config.ts b/next.config.ts
index 5550009..206c776 100644
--- a/next.config.ts
+++ b/next.config.ts
@@ -7,6 +7,13 @@ const nextConfig: NextConfig = {
     return [
       // There is no docs index page; the footer and navbar link to /docs.
       { source: "/docs", destination: "/docs/getting-started", permanent: true },
+      // The formatters (LocaleNumber, RelativeTime) were removed in #72; their old
+      // docs URLs are still known to search engines.
+      {
+        source: "/docs/components/formatters/:path*",
+        destination: "/docs/components",
+        permanent: true,
+      },
     ];
   },
 };