diff --git a/ChangeLog b/ChangeLog
index 7090b6a..4af50e2 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,5 @@
+UNRELEASED Version 0.5
+
 2011-06-16 Version 0.4.2
     - Fix use of dns namespace so dnspython works
 
diff --git a/PKG-INFO b/PKG-INFO
index ef6a3a2..671d4c9 100644
--- a/PKG-INFO
+++ b/PKG-INFO
@@ -1,6 +1,6 @@
 Metadata-Version: 1.0
 Name: pydkim
-Version: 0.4.2
+Version: 0.5
 Summary: DKIM (DomainKeys Identified Mail)
 Home-page: http://hewgill.com/pydkim/
 Author: Greg Hewgill
diff --git a/README b/README
index dfb677e..3e82e64 100644
--- a/README
+++ b/README
@@ -8,7 +8,7 @@ signing and verification.
 
 VERSION
 
-This is pydkim 0.4.2.
+This is pydkim 0.5.
 
 REQUIREMENTS
 
diff --git a/setup.py b/setup.py
index cde8733..50a07c5 100644
--- a/setup.py
+++ b/setup.py
@@ -24,7 +24,7 @@
 from distutils.core import setup
 import os
 
-version = "0.4.2"
+version = "0.5"
 
 setup(
     name = "pydkim",