diff --git a/jupyterlab_widgets/src/index.ts b/jupyterlab_widgets/src/index.ts
index d59b0a3aba..12e6e021fc 100644
--- a/jupyterlab_widgets/src/index.ts
+++ b/jupyterlab_widgets/src/index.ts
@@ -8,7 +8,11 @@ export default WidgetManagerProvider;
 
 export { registerWidgetManager } from './plugin';
 
-export { WidgetManager } from './manager';
+export {
+  KernelWidgetManager,
+  LabWidgetManager,
+  WidgetManager
+} from './manager';
 
 export { WidgetRenderer } from './renderer';