diff --git a/setup.py b/setup.py
index d4da1b4..250d3ef 100644
--- a/setup.py
+++ b/setup.py
@@ -32,7 +32,7 @@
 
 setup(
     name='cryptoconditions',
-    version='0.3.1',
+    version='0.4.0',
     description='Multi-algorithm, multi-level, multi-signature format for '
                 'expressing conditions and fulfillments according to the Interledger Protocol (ILP).',
     long_description=__doc__,