diff --git a/notebook/_version.py b/notebook/_version.py
index 9ddd66dad3..d7ec78b913 100644
--- a/notebook/_version.py
+++ b/notebook/_version.py
@@ -9,5 +9,5 @@
 
 # Next beta/alpha/rc release: The version number for beta is X.Y.ZbN **without dots**.
 
-version_info = (6, 0, 0, 'dev0')
+version_info = (6, 0, 0, '.dev0')
 __version__ = '.'.join(map(str, version_info[:3])) + ''.join(version_info[3:])
diff --git a/notebook/static/base/js/namespace.js b/notebook/static/base/js/namespace.js
index 85db77f100..070de85f8c 100644
--- a/notebook/static/base/js/namespace.js
+++ b/notebook/static/base/js/namespace.js
@@ -73,8 +73,9 @@ define(function(){
     // tree
     jglobal('SessionList','tree/js/sessionlist');
 
-    Jupyter.version = "5.7.0";
+    Jupyter.version = "6.0.0.dev0";
     Jupyter._target = '_blank';
+
     return Jupyter;
 });