diff --git a/CHANGES.rst b/CHANGES.rst
index b93ca000..1df0044d 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,6 +1,12 @@
 Changelog
 =========
 
+9.1.3.post3 (unreleased)
+------------------------
+
+- Nothing changed yet.
+
+
 9.1.3.post2 (2024-02-28)
 ------------------------
 
diff --git a/setup.py b/setup.py
index f57f9b07..299b52a6 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@
 
 from setuptools import find_packages, setup
 
-version = "9.1.3.post2"
+version = "9.1.3.post3.dev0"
 
 assert sys.version_info >= (
     3,