diff --git a/CHANGES.rst b/CHANGES.rst
index 9f9aec6..b16c373 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -2,10 +2,10 @@
 CHANGES
 =======
 
-6.3 (unreleased)
+7.0 (unreleased)
 ----------------
 
-- Nothing changed yet.
+- Replace ``pkg_resources`` namespace with PEP 420 native namespace.
 
 
 6.2 (2025-08-08)
diff --git a/setup.py b/setup.py
index ca31ac3..8a6cfe6 100644
--- a/setup.py
+++ b/setup.py
@@ -20,7 +20,6 @@
 """
 import os
 
-from setuptools import find_packages
 from setuptools import setup
 
 
@@ -29,7 +28,7 @@ def read(*rnames):
 
 
 setup(name='zope.untrustedpython',
-      version='6.3.dev0',
+      version='7.0.dev0',
       author='Zope Foundation and Contributors',
       author_email='zope-dev@zope.dev',
       description='Zope Untrusted Python Library',
@@ -59,9 +58,6 @@ def read(*rnames):
       ],
       url='http://github.com/zopefoundation/zope.untrustedpython',
       license='ZPL-2.1',
-      packages=find_packages('src'),
-      package_dir={'': 'src'},
-      namespace_packages=['zope'],
       python_requires='>=3.9',
       install_requires=[
           'RestrictedPython >= 4',
diff --git a/src/zope/__init__.py b/src/zope/__init__.py
deleted file mode 100644
index de40ea7..0000000
--- a/src/zope/__init__.py
+++ /dev/null
@@ -1 +0,0 @@
-__import__('pkg_resources').declare_namespace(__name__)