diff --git a/CHANGES.md b/CHANGES.md
index 42d3cba..acc89da 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,4 +1,10 @@
 
+## 2.4.22 (unreleased)
+
+
+- Nothing changed yet.
+
+
 ## 2.4.21 (2024-12-13)
 
 
diff --git a/setup.py b/setup.py
index 667a198..0afd7c0 100644
--- a/setup.py
+++ b/setup.py
@@ -13,7 +13,7 @@ def project_path(*names):
 
 setup(
     name="batou_ext",
-    version="2.4.21",
+    version="2.4.22.dev0",
     install_requires=[
         "batou >= 2.3b4",
         "pyaml",