diff --git a/CHANGES.rst b/CHANGES.rst
index 2735c4f..c8c37d3 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,6 +1,12 @@
 Changelog
 =========
 
+8.3.1 (unreleased)
+------------------
+
+- Nothing changed yet.
+
+
 8.3 (2023-09-25)
 ----------------
 
diff --git a/setup.py b/setup.py
index f1ab40a..b624cd7 100644
--- a/setup.py
+++ b/setup.py
@@ -20,7 +20,7 @@
 
 from setuptools import setup, find_packages
 
-version = "8.3"
+version = "8.3.1.dev0"
 
 setup(
     name="collective.searchandreplace",