diff --git a/jupyterlab_pullrequests/__init__.py b/jupyterlab_pullrequests/__init__.py
index f53bed2..ffe3ee5 100644
--- a/jupyterlab_pullrequests/__init__.py
+++ b/jupyterlab_pullrequests/__init__.py
@@ -22,3 +22,8 @@ def _load_jupyter_server_extension(server_app):
     config = PRConfig(config=server_app.config)
     setup_handlers(server_app.web_app, config)
     server_app.log.info("Registered jupyterlab_pullrequests extension")
+
+
+# for legacy launching with notebok (e.g. Binder)
+_jupyter_server_extension_paths = _jupyter_server_extension_points
+load_jupyter_server_extension = _load_jupyter_server_extension