diff --git a/CHANGES.rst b/CHANGES.rst
index 4e40e74..2bb5f4d 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,6 +1,12 @@
 Changes
 =======
 
+7.4 (unreleased)
+----------------
+
+- Nothing changed yet.
+
+
 7.3 (2024-09-30)
 ----------------
 
diff --git a/setup.py b/setup.py
index 6a0ca55..a1fc431 100644
--- a/setup.py
+++ b/setup.py
@@ -30,7 +30,7 @@ def read(*rnames):
 ]
 
 setup(name='RestrictedPython',
-      version='7.3',
+      version='7.4.dev0',
       url='https://github.com/zopefoundation/RestrictedPython',
       license='ZPL 2.1',
       description=(