diff --git a/packages/nextjs/src/config/loaders/wrappingLoader.ts b/packages/nextjs/src/config/loaders/wrappingLoader.ts
index 8178ace4c096..3742724ae4fb 100644
--- a/packages/nextjs/src/config/loaders/wrappingLoader.ts
+++ b/packages/nextjs/src/config/loaders/wrappingLoader.ts
@@ -68,7 +68,7 @@ export default function wrappingLoader(
   }
 
   const middlewareJsPath = path.join(pagesDir, '..', 'middleware.js');
-  const middlewareTsPath = path.join(pagesDir, '..', 'middleware.js');
+  const middlewareTsPath = path.join(pagesDir, '..', 'middleware.ts');
 
   let templateCode: string;
   if (parameterizedRoute.startsWith('/api')) {