diff --git a/setup.py b/setup.py
index 308b17a..7b156b4 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@
 
 setup(
     name="fixity",
-    version="0.3",
+    version="0.4.0",
     packages=["fixity"],
     url="https://github.com/artefactual/fixity",
     author="Artefactual Systems",