diff --git a/CHANGES.rst b/CHANGES.rst
index 975e76177..f615c077b 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -2,6 +2,12 @@ Changelog
 =========
 
 
+4.2.16 (unreleased)
+-------------------
+
+- Nothing changed yet.
+
+
 4.2.15 (2025-02-06)
 -------------------
 
diff --git a/setup.py b/setup.py
index cc97678ca..d16f0c9a0 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@
 from setuptools import setup
 
 
-version = '4.2.15'
+version = '4.2.16.dev0'
 
 setup(name='Products.PloneMeeting',
       version=version,