Bump version to 0.4-dev.
diff --git a/Changes.mdown b/Changes.mdown
index c7b92c8..f23244c 100644
--- a/Changes.mdown
+++ b/Changes.mdown
@@ -1,3 +1,10 @@
+0.4:
+---
+Release date: ???
+
+(No changes yet.)
+
+
 0.3:
 ----
 Release date: **2010/07/22**
diff --git a/git-flow-version b/git-flow-version
index 93a0df2..e0b7663 100644
--- a/git-flow-version
+++ b/git-flow-version
@@ -36,7 +36,7 @@
 # policies, either expressed or implied, of Vincent Driessen.
 #
 
-GITFLOW_VERSION=0.3-dev
+GITFLOW_VERSION=0.4-dev
 
 usage() {
 	echo "usage: git flow version"