diff --git a/CHANGES.rst b/CHANGES.rst
index afc8ad7af..5601921a4 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,5 +1,11 @@
 .. currentmodule:: werkzeug
 
+Version 2.3.8
+-------------
+
+Unreleased
+
+
 Version 2.3.7
 -------------
 
diff --git a/src/werkzeug/__init__.py b/src/werkzeug/__init__.py
index d34bfe639..f6b9f5786 100644
--- a/src/werkzeug/__init__.py
+++ b/src/werkzeug/__init__.py
@@ -3,4 +3,4 @@
 from .wrappers import Request as Request
 from .wrappers import Response as Response
 
-__version__ = "2.3.7"
+__version__ = "2.3.7.dev"