diff --git a/cherry_picker/cherry_picker/__init__.py b/cherry_picker/cherry_picker/__init__.py
index 0b009e2..4b3c0ac 100644
--- a/cherry_picker/cherry_picker/__init__.py
+++ b/cherry_picker/cherry_picker/__init__.py
@@ -1,2 +1,2 @@
 """Backport CPython changes from master to maintenance branches."""
-__version__ = '1.2.2'
+__version__ = '1.2.3.dev1'
diff --git a/cherry_picker/readme.rst b/cherry_picker/readme.rst
index bdfd57a..10320f9 100644
--- a/cherry_picker/readme.rst
+++ b/cherry_picker/readme.rst
@@ -335,6 +335,10 @@ in the directory where ``pyproject.toml`` exists::
 Changelog
 =========
 
+1.2.3 (in development)
+----------------------
+
+
 1.2.2
 -----