diff --git a/CHANGES.rst b/CHANGES.rst
index f2a8fab4..8086dc03 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -2,6 +2,10 @@
  Changes
 =========
 
+6.2 (unreleased)
+================
+
+
 6.1 (2023-10-05)
 ================
 
diff --git a/setup.py b/setup.py
index 4f2d43b3..880cb365 100644
--- a/setup.py
+++ b/setup.py
@@ -100,7 +100,7 @@ def read(*rnames):
         )
 
 setup(name='zope.interface',
-      version='6.1',
+      version='6.2.dev0',
       url='https://github.com/zopefoundation/zope.interface',
       license='ZPL 2.1',
       description='Interfaces for Python',