diff --git a/CHANGELOG b/CHANGELOG
index e71cebb..412779b 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,7 @@
+v0.5 (unreleased):
+
+- ...
+
 v0.4 (released January 17, 2017):
 
 - Added a `--prune` flag to delete remote-tracking branches that no longer
diff --git a/gitup/__init__.py b/gitup/__init__.py
index f1fa294..8a87cfc 100644
--- a/gitup/__init__.py
+++ b/gitup/__init__.py
@@ -10,5 +10,5 @@ gitup: the git repository updater
 __author__ = "Ben Kurtovic"
 __copyright__ = "Copyright (C) 2011-2017 Ben Kurtovic"
 __license__ = "MIT License"
-__version__ = "0.4"
+__version__ = "0.5.dev0"
 __email__ = "ben.kurtovic@gmail.com"