diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index e268e20..566da80 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 0.3.3
+current_version = 0.4.0
 commit = True
 tag = False
 
diff --git a/setup.py b/setup.py
index 726d34c..27cbbef 100644
--- a/setup.py
+++ b/setup.py
@@ -6,7 +6,7 @@
 
 setup(
     name='atomrdf',
-    version='0.3.3',
+    version='0.4.0',
     author='Abril Azocar Guzman, Sarath Menon',
     author_email='sarath.menon@pyscal.org',
     description='Ontology based structural manipulation and quering',