diff --git a/CHANGES.rst b/CHANGES.rst
index 3c1117d83..ec16da97f 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,5 +1,11 @@
 .. currentmodule:: werkzeug
 
+Version 3.1.2
+-------------
+
+Unreleased
+
+
 Version 3.1.1
 -------------
 
diff --git a/pyproject.toml b/pyproject.toml
index 1ce88e3a5..b612b662a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "Werkzeug"
-version = "3.1.1"
+version = "3.1.2.dev"
 description = "The comprehensive WSGI web application library."
 readme = "README.md"
 license = {file = "LICENSE.txt"}