diff --git a/CHANGES.rst b/CHANGES.rst
index 48c8113..5d7d03d 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,6 +1,10 @@
 Change log
 ==========
 
+1.1 (unreleased)
+----------------
+
+
 1.0 (2024-10-02)
 ----------------
 
diff --git a/setup.py b/setup.py
index 241e0d6..8ccecb0 100644
--- a/setup.py
+++ b/setup.py
@@ -27,7 +27,7 @@ def read(*rnames):
 
 setup(
     name='zope.meta',
-    version='1.0',
+    version='1.1.dev0',
     author='Zope Foundation and Contributors',
     author_email='zope-dev@zope.dev',
     description='Helper functions for package management',