diff --git a/CHANGES.rst b/CHANGES.rst
index 6052ae6..d83b151 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -3,6 +3,12 @@
 Changelog
 =========
 
+2.5.1 (unreleased)
+------------------
+
+- Nothing changed yet.
+
+
 2.5.0 (2024-04-09)
 ------------------
 
diff --git a/pyproject.toml b/pyproject.toml
index 4d70363..ea31ea5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "flake8-builtins"
-version = "2.5.0"
+version = "2.5.1.dev0"
 authors = [
   { name="Gil Forcada Codinachs", email="gil.gnome@gmail.com" },
 ]