diff --git a/CHANGES.rst b/CHANGES.rst
index 5d466da0..0930f830 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -2,6 +2,12 @@ Changelog
 =========
 
 
+5.1.13 (unreleased)
+-------------------
+
+- Nothing changed yet.
+
+
 5.1.12 (2024-04-09)
 -------------------
 
diff --git a/setup.py b/setup.py
index eab949ef..9ffa9b2e 100644
--- a/setup.py
+++ b/setup.py
@@ -16,7 +16,7 @@
 
 setup(
     name="design.plone.contenttypes",
-    version="5.1.12",
+    version="5.1.13.dev0",
     description="DesignItalia contenty types",
     long_description=long_description,
     long_description_content_type="text/markdown",