diff --git a/VERSION b/VERSION
index 99a89b9..60a2d3e 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.3.11
\ No newline at end of file
+0.4.0
\ No newline at end of file
diff --git a/skgstat/__init__.py b/skgstat/__init__.py
index a60a9fe..afa2413 100644
--- a/skgstat/__init__.py
+++ b/skgstat/__init__.py
@@ -5,6 +5,6 @@
 from . import interfaces
 
 # set some stuff
-__version__ = '0.3.11'
+__version__ = '0.4.0'
 __author__ = 'Mirko Maelicke <mirko.maelicke@kit.edu>'
 __backend__ = 'matplotlib'