diff --git a/CHANGES.rst b/CHANGES.rst
index 5d15678..b51a431 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -2,6 +2,12 @@
  Changelog
 ===========
 
+2.5 (unreleased)
+================
+
+- Nothing changed yet.
+
+
 2.4 (2022-09-15)
 ================
 
diff --git a/setup.py b/setup.py
index 911e506..1fe9ca5 100644
--- a/setup.py
+++ b/setup.py
@@ -47,7 +47,7 @@ def read(fname):
 
 setup(
     name='zodbpickle',
-    version='2.4',
+    version='2.5.dev0',
     description='Fork of Python 2 and 3 pickle module.',
     author='Python and Zope Foundation',
     author_email='zodb-dev@zope.org',