diff --git a/atpublic-3.1.1.tar.gz b/atpublic-3.1.1.tar.gz
deleted file mode 100644
index 35e9999..0000000
--- a/atpublic-3.1.1.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:3098ee12d0107cc5009d61f4e80e5edcfac4cda2bdaa04644af75827cb121b18
-size 14050
diff --git a/atpublic-4.0.tar.gz b/atpublic-4.0.tar.gz
new file mode 100644
index 0000000..d371e9d
--- /dev/null
+++ b/atpublic-4.0.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7bb8b62ba9106569f475366b12f41d4f1d20575e3ae0daa530d474219f18e2ea
+size 49629
diff --git a/python-atpublic.changes b/python-atpublic.changes
index 4171176..4e38fd0 100644
--- a/python-atpublic.changes
+++ b/python-atpublic.changes
@@ -1,3 +1,20 @@
+-------------------------------------------------------------------
+Thu Dec  7 20:11:21 UTC 2023 - Dirk Müller <dmueller@suse.com>
+
+- update to 4.0:
+  * Drop Python 3.7 support (GL#16)
+  * Remove ``public.install()`` which was used to inject the
+    ``public`` and ``private`` functions into the ``builtins``
+    namespace.  This isn't very helpful and could be actively
+    harmful.  Explicit is better than implicit. (GL#14)
+  * The functional form of ``public()`` now returns the argument
+    *values* in the order they are given.  This allows you to
+    explicitly bind those values to names in the global namespace.
+  * Switch from ``flake8`` and ``isort`` to ``ruff`` for code
+    quality. (GL#32)
+  * Switch to ``pdm-backend`` (GL#15)
+  * More GitLab CI integration improvements.
+
 -------------------------------------------------------------------
 Tue Jun 13 11:22:36 UTC 2023 - Dirk Müller <dmueller@suse.com>
 
@@ -38,7 +55,7 @@ Sun Dec  4 20:31:51 UTC 2022 - Torsten Gruner <simmphonie@opensuse.org>
 Tue Jan 11 20:25:53 UTC 2022 - Ben Greiner <code@bnavigator.de>
 
 - Fix sybil usage in conftest based on sybil version.
-  * https://gitlab.com/warsaw/public/-/merge_requests/16  
+  * https://gitlab.com/warsaw/public/-/merge_requests/16
 
 -------------------------------------------------------------------
 Fri May 21 08:42:52 UTC 2021 - pgajdos@suse.com
@@ -47,7 +64,7 @@ Fri May 21 08:42:52 UTC 2021 - pgajdos@suse.com
   2.3 (2021-04-13)
   ================
   * Do type hinting the right way. (GL#10)
-  
+
   2.2 (2021-04-13)
   ================
   * ``public()`` and ``private()`` can't be correctly type annotated, so the
diff --git a/python-atpublic.spec b/python-atpublic.spec
index fc5fad3..29e89df 100644
--- a/python-atpublic.spec
+++ b/python-atpublic.spec
@@ -26,7 +26,7 @@
 %endif
 %{?sle15_python_module_pythons}
 Name:           python-atpublic
-Version:        3.1.1
+Version:        4.0
 Release:        0
 Summary:        @public decorator for populating __all__
 License:        Apache-2.0
@@ -34,6 +34,7 @@ Group:          Development/Languages/Python
 URL:            http://public.readthedocs.io/
 Source:         https://gitlab.com/warsaw/public/-/archive/%{version}/public-%{version}.tar.gz#/atpublic-%{version}.tar.gz
 BuildRequires:  %{python_module base >= 3.7}
+BuildRequires:  %{python_module pdm-backend}
 BuildRequires:  %{python_module pdm-pep517 >= 1.0}
 BuildRequires:  %{python_module pip}
 BuildRequires:  %{python_module setuptools}
@@ -55,7 +56,7 @@ BuildRequires:  %{python_module sybil}
 public -- @public for populating __all__.
 
 %prep
-%setup -q -n atpublic-%{version}
+%setup -q -n public-%{version}
 
 %build
 %pyproject_wheel