diff --git a/jupyter-openbis-extension/__init__.py b/jupyter-openbis-extension/__init__.py
index 2e1b42c1462eb92b6d31866d4863c762320e1b89..c4c2f3ea1bd3b4b9375e676f33f3c6fd73ebcab2 100644
--- a/jupyter-openbis-extension/__init__.py
+++ b/jupyter-openbis-extension/__init__.py
@@ -1,7 +1,7 @@
 name = 'jupyter-openbis-extension.server'
 __author__ = 'Swen Vermeul'
 __email__ = 'swen@ethz.ch'
-__version__ = '0.3.0'
+__version__ = '0.4.0'
 
 def _jupyter_server_extension_paths():
     return [{