diff --git a/CHANGES.rst b/CHANGES.rst
index 0028d6d..630f752 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -2,6 +2,12 @@
  Changes
 =========
 
+1.18.1 (unreleased)
+===================
+
+- Nothing changed yet.
+
+
 1.18.0 (2024-11-18)
 ===================
 
diff --git a/setup.py b/setup.py
index e42951a..a1516ef 100644
--- a/setup.py
+++ b/setup.py
@@ -3,7 +3,7 @@
 from setuptools import setup
 from setuptools import find_namespace_packages
 
-version = '1.18.0'
+version = '1.18.1.dev0'
 
 entry_points = {
 }