diff --git a/README.md b/README.md
index 8407b0a779..09f32fbe4b 100644
--- a/README.md
+++ b/README.md
@@ -4,3 +4,5 @@ ASP.NET Core SignalR
 ASP.NET Core SignalR is a new library for ASP.NET Core developers that makes it incredibly simple to add real-time web functionality to your applications. What is "real-time web" functionality? It's the ability to have your server-side code push content to the connected clients as it happens, in real-time.
 
 This project is part of ASP.NET Core. You can find samples, documentation and getting started instructions for ASP.NET Core at the [Home](https://github.com/aspnet/home) repo.
+
+**Note** To build the project locally at this time you will need the [TypeScript Compiler](https://www.typescriptlang.org/#download-links) on your path.