diff --git a/packages/next/next-server/lib/router/router.ts b/packages/next/next-server/lib/router/router.ts
index 00c9c4ae2a313..e59fada6cbb11 100644
--- a/packages/next/next-server/lib/router/router.ts
+++ b/packages/next/next-server/lib/router/router.ts
@@ -360,6 +360,7 @@ export type NextRouter = BaseRouter &
     | 'beforePopState'
     | 'events'
     | 'isFallback'
+    | 'isReady'
   >
 
 export type PrefetchOptions = {