diff --git a/packages/gatsby/cache-dir/page-ssr/index.d.ts b/packages/gatsby/cache-dir/page-ssr/index.d.ts
index 2cedbe7685584..e09f4beb1683c 100644
--- a/packages/gatsby/cache-dir/page-ssr/index.d.ts
+++ b/packages/gatsby/cache-dir/page-ssr/index.d.ts
@@ -31,6 +31,7 @@ type ISSRData = Opaque<
   "ISSRData",
   {
     serverDataHeaders?: Record<string, string>
+    serverDataStatus?: number
   }
 >