diff --git a/CHANGES.md b/CHANGES.md
index e6b9fdb..0758acf 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,6 +1,12 @@
 Changes
 =======
 
+## 1.3.5.15 (unreleased)
+------------------------
+
+- Nothing changed yet.
+
+
 ## 1.3.5.14 (2024-12-31)
 ---------------------
 
diff --git a/setup.py b/setup.py
index 4ecd7a9..3ad346b 100644
--- a/setup.py
+++ b/setup.py
@@ -3,7 +3,7 @@
 from setuptools import setup, find_packages
 
 
-version = '1.3.5.14'
+version = '1.3.5.15.dev0'
 
 
 with open('README.md') as file: