diff --git a/CHANGES.rst b/CHANGES.rst
index f4ffa39578860bae1a539826e1e964e585fd4eea..e15a5296e5b8e177eb902698d2d66041004c834c 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,8 +1,8 @@
 Changes
 =======
 
-0.4.1 (unreleased)
-------------------
+0.5 (unreleased)
+----------------
 
 - New option ``-r``, ``--randomsource``. We support a pluggable system
   to define alternative sources of randomness. Currently supported
diff --git a/setup.py b/setup.py
index 3d5842c2b6a61d39ff7aafb70c4d9060d0a53e7d..2472e1350a83d3164bed3c567b39518e03a44552 100644
--- a/setup.py
+++ b/setup.py
@@ -44,7 +44,7 @@ docs_require = [
 
 setup(
     name="diceware",
-    version="0.4.1.dev0",
+    version="0.5.dev0",
     author="Uli Fouquet",
     author_email="uli@gnufix.de",
     description=(