diff --git a/CHANGES.rst b/CHANGES.rst
index f80d6bd..0ff61f7 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,10 +1,11 @@
 Changelog
 =========
 
-3.0.4 (unreleased)
+4.0.0 (unreleased)
 ------------------
 
-- Nothing changed yet.
+- Move to use native namespaces.
+  [erral]
 
 
 3.0.3 (2026-05-29)
diff --git a/setup.py b/setup.py
index 467ba34..ea29176 100644
--- a/setup.py
+++ b/setup.py
@@ -1,7 +1,6 @@
-from setuptools import find_packages
 from setuptools import setup
 
-version = "3.0.4.dev0"
+version = "4.0.0.dev0"
 
 long_description = "{}\n{}".format(
     open("README.rst").read(), open("CHANGES.rst").read()
@@ -32,14 +31,10 @@
     author_email="thetetet@gmail.com",
     url="https://github.com/collective/collective.richdescription",
     license="GPLv2",
-    packages=find_packages("src"),
-    package_dir={"": "src"},
     python_requires=">=3.10",
-    namespace_packages=["collective"],
     include_package_data=True,
     zip_safe=False,
     install_requires=[
-        "setuptools",
         "plone.app.dexterity",
         "plone.app.textfield",
         "plone.app.z3cform",
diff --git a/src/collective/__init__.py b/src/collective/__init__.py
deleted file mode 100644
index 5284146..0000000
--- a/src/collective/__init__.py
+++ /dev/null
@@ -1 +0,0 @@
-__import__("pkg_resources").declare_namespace(__name__)