diff --git a/CHANGES.rst b/CHANGES.rst
index a7284bbfe6051390cedb0d1127e5b665375375a6..9b722e0c0795e9a3630058262fce9fd310fb4b2a 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,6 +1,12 @@
 Changes
 =======
 
+0.4 (unreleased)
+----------------
+
+- No changes yet.
+
+
 0.3 (2015-03-28)
 ----------------
 
diff --git a/setup.py b/setup.py
index 3dbdbd1c066e5baffa3d57de7dc41c6c62935488..e82ed2cbbfff25a697fd5ef660f93afe1584870d 100644
--- a/setup.py
+++ b/setup.py
@@ -40,7 +40,7 @@ docs_require = [
 
 setup(
     name="diceware",
-    version="0.3",
+    version="0.4.dev0",
     author="Uli Fouquet",
     author_email="uli@gnufix.de",
     description=(