diff --git a/flufl.i18n-3.2.tar.gz b/flufl.i18n-3.2.tar.gz
deleted file mode 100644
index 065a5be..0000000
--- a/flufl.i18n-3.2.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:c35c8f8eab66adb7fd64a1420860105066d2b36cb655b33ffb14afe8e223ed62
-size 24209
diff --git a/flufl.i18n-4.0.tar.gz b/flufl.i18n-4.0.tar.gz
new file mode 100644
index 0000000..8af852e
--- /dev/null
+++ b/flufl.i18n-4.0.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:313ab4763845a7f704c74133b7911a333dccceb0168f16741d04a47c5b9ab166
+size 21119
diff --git a/python-flufl.i18n-fix-setup.patch b/python-flufl.i18n-fix-setup.patch
deleted file mode 100644
index 2fcb62d..0000000
--- a/python-flufl.i18n-fix-setup.patch
+++ /dev/null
@@ -1,10 +0,0 @@
-Index: flufl.i18n-3.2/setup.cfg
-===================================================================
---- flufl.i18n-3.2.orig/setup.cfg	2021-05-29 20:08:18.854980000 +0200
-+++ flufl.i18n-3.2/setup.cfg	2021-11-17 10:36:00.095701103 +0100
-@@ -1,5 +1,4 @@
- [tool:pytest]
--addopts = --cov=flufl
- testpaths = test docs
- 
- [flake8]
diff --git a/python-flufl.i18n.changes b/python-flufl.i18n.changes
index 7235bb4..eeafaf9 100644
--- a/python-flufl.i18n.changes
+++ b/python-flufl.i18n.changes
@@ -1,3 +1,17 @@
+-------------------------------------------------------------------
+Sun Jan 23 23:01:57 UTC 2022 - Matej Cepl <mcepl@suse.com>
+
+- Update to 4.0:
+  - Use modern package management by adopting pdm and
+    pyproject.toml, and dropping setup.py and setup.cfg.
+  - Build the docs with Python 3.8.
+  - Update to version 3.0 of Sybil.
+  - Adopt the Furo documentation theme.
+  - Use importlib.metadata.version() as a better way to get the
+    package version number for the documentation.
+  - Drop Python 3.6 support.
+  - Update copyright years.
+
 -------------------------------------------------------------------
 Wed Nov 17 09:36:44 UTC 2021 - Andreas Schneider <asn@cryptomilk.org>
 
diff --git a/python-flufl.i18n.spec b/python-flufl.i18n.spec
index af4cabb..90c8890 100644
--- a/python-flufl.i18n.spec
+++ b/python-flufl.i18n.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package python-flufl.i18n
 #
-# Copyright (c) 2021 SUSE LLC
+# Copyright (c) 2022 SUSE LLC
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -19,17 +19,20 @@
 %{?!python_module:%define python_module() python-%{**} python3-%{**}}
 %define pythons python3
 Name:           python-flufl.i18n
-Version:        3.2
+Version:        4.0
 Release:        0
 Summary:        High level API for internationalizing Python libraries and applications
 License:        Apache-2.0
-URL:            https://flufli18n.readthedocs.io
+URL:            https://gitlab.com/warsaw/flufl.i18n
 Source:         https://files.pythonhosted.org/packages/source/f/flufl.i18n/flufl.i18n-%{version}.tar.gz
-Patch0:         python-flufl.i18n-fix-setup.patch
+BuildRequires:  %{python_module pdm}
+BuildRequires:  %{python_module pip}
 BuildRequires:  %{python_module setuptools}
+BuildRequires:  %{python_module wheel}
 BuildRequires:  python-rpm-macros
 # SECTION test requirements
 BuildRequires:  %{python_module atpublic}
+BuildRequires:  %{python_module pytest-cov}
 BuildRequires:  %{python_module pytest}
 BuildRequires:  %{python_module six}
 BuildRequires:  %{python_module sybil}
@@ -48,10 +51,10 @@ High level API for internationalizing Python libraries and applications.
 %autosetup -n flufl.i18n-%{version} -p1
 
 %build
-%python_build
+%pyproject_wheel
 
 %install
-%python_install
+%pyproject_install
 %python_expand %fdupes %{buildroot}%{$python_sitelib}
 
 %check
@@ -60,6 +63,9 @@ High level API for internationalizing Python libraries and applications.
 %files %{python_files}
 %doc README.rst
 %license LICENSE
-%{python_sitelib}/*
+%dir %{python_sitelib}/flufl
+%{python_sitelib}/flufl/i18n*
+%{python_sitelib}/flufl.i18n*
+%{python_sitelib}/flufl.i18n-%{version}*info
 
 %changelog