diff --git a/CHANGES.rst b/CHANGES.rst
index ab7dd81..11c794f 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,6 +1,16 @@
 Changes
 =======
 
+0.13.0 (Unreleased)
+-------------------
+
+Enhancements:
+- ??
+
+Fixes:
+- ??
+
+
 0.12.0 (2022-03-28)
 -------------------
 
diff --git a/setup.cfg b/setup.cfg
index d06e78e..bbb87c7 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,6 @@
 [metadata]
 name = Flask-DebugToolbar
-version = 0.12.0
+version = 0.13.dev0
 author = Michael van Tellingen
 author_email = michaelvantellingen@gmail.com
 maintainer = Matt Good