diff --git a/src/index.js b/src/index.js
index 99a2824..55205f3 100644
--- a/src/index.js
+++ b/src/index.js
@@ -1,4 +1,8 @@
 import './metadataProvider.js';
 import CornerstoneViewport from './CornerstoneViewport/CornerstoneViewport.js';
 
+import ViewportOverlay from './ViewportOverlay/ViewportOverlay';
+
+export { ViewportOverlay };
+
 export default CornerstoneViewport;