diff --git a/CHANGES.rst b/CHANGES.rst
index e1da81b..cb909c7 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -2,6 +2,10 @@
  Changes
 =========
 
+6.1 (unreleased)
+================
+
+
 6.0 (2024-09-17)
 ================
 
diff --git a/setup.py b/setup.py
index 8a5eceb..9a30862 100644
--- a/setup.py
+++ b/setup.py
@@ -79,7 +79,7 @@ def read(*rnames):
     headers = [os.path.join('src', 'zope', 'proxy', 'proxy.h')]
 
 setup(name='zope.proxy',
-      version='6.0',
+      version='6.1.dev0',
       author='Zope Foundation and Contributors',
       author_email='zope-dev@zope.org',
       description='Generic Transparent Proxies',