diff --git a/nbclassic/notebookapp.py b/nbclassic/notebookapp.py
index d12831da2..37c8e5b79 100644
--- a/nbclassic/notebookapp.py
+++ b/nbclassic/notebookapp.py
@@ -274,6 +274,16 @@ def initialize_handlers(self):
                 {"url": self.serverapp.base_url+"files/{0}"}
             )
         )
+        # Add a redirect from /nbclassic to /nbclassic/tree
+        # if both notebook>=7 and nbclassic are installed.
+        if len(nbclassic_path()) > 0:
+            handlers.append(
+                (
+                    rf"/nbclassic",
+                    RedirectHandler,
+                    {"url": self.serverapp.base_url+"nbclassic/tree"}
+                )
+            )
 
         # load extra services specified by users before default handlers
         for service in self.settings['extra_services']:
diff --git a/nbclassic/static/base/js/namespace.js b/nbclassic/static/base/js/namespace.js
index 3c9bee44c..7ee899278 100644
--- a/nbclassic/static/base/js/namespace.js
+++ b/nbclassic/static/base/js/namespace.js
@@ -73,7 +73,7 @@ define(function(){
     // tree
     jglobal('SessionList','tree/js/sessionlist');
 
-    Jupyter.version = "0.4.6";
+    Jupyter.version = "0.5.0.dev0";
     Jupyter._target = '_blank';
 
     return Jupyter;