diff --git a/README.md b/README.md
index 1cc22883..a99339a0 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,10 @@
 
 Accessible modal dialog component for React.JS
 
+## Active Development
+The modal is currently undergoing significant development for a v2 release.  The `master` branch contains that development work.
+If you'd like to see the latest stable version please use the release tags (https://github.com/reactjs/react-modal/releases)
+
 ### Installation
 
 To install the stable version: