diff --git a/CHANGES.rst b/CHANGES.rst
index ea82390..fff4f2f 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,6 +1,12 @@
 Products.CMFUid Changelog
 =========================
 
+3.4 (unreleased)
+----------------
+
+- Nothing changed yet.
+
+
 3.3 (2022-07-13)
 ----------------
 
diff --git a/setup.py b/setup.py
index 84dee43..3d7c738 100644
--- a/setup.py
+++ b/setup.py
@@ -19,7 +19,7 @@ def _read(name):
 
 setup(
     name='Products.%s' % NAME,
-    version='3.3',
+    version='3.4.dev0',
     description='Uid product for the Zope Content Management Framework',
     long_description=README,
     classifiers=[