diff --git a/src/sciduck/__init__.py b/src/sciduck/__init__.py
index 687a68d..fc4d5db 100644
--- a/src/sciduck/__init__.py
+++ b/src/sciduck/__init__.py
@@ -4,7 +4,7 @@
 single cell data analyis unification and communication toolkit
 """
 
-__version__ = "0.3.0"
+__version__ = "0.4.0"
 __authors__ = ['Nelson Johansen', 'Matthew Schmitz', 'Dan Yuan']
 __credits__ = 'Allen Institute for Brain Science'