diff --git a/python-pyrfc3339.spec b/python-pyrfc3339.spec
index 6977a98..f96fb60 100644
--- a/python-pyrfc3339.spec
+++ b/python-pyrfc3339.spec
@@ -17,10 +17,9 @@ Source1:        https://raw.githubusercontent.com/kurtraschke/pyRFC3339/e30cc155
 BuildArch:      noarch
 
 BuildRequires:  %{py3_prefix}-devel
-BuildRequires:  %{py3_prefix}-setuptools
 # --- unit tests ---
+# Specified manually because upstream release tarballs do not contain unit tests
 BuildRequires:  %{py3_prefix}-pytest
-BuildRequires:  %{py3_prefix}-pytz
 
 %description
 This package contains a python library to parse and generate
@@ -34,31 +33,32 @@ Summary:        Generate and parse RFC 3339 timestamps
 This package contains a Python 3 library to parse and generate
 RFC 3339-compliant timestamps using Python datetime.datetime objects.
 
+%generate_buildrequires
+%pyproject_buildrequires
 
 
 %prep
 %autosetup -n %{srcname}-%{version}
 
 %build
-%py3_build
+%pyproject_wheel
 
 %install
-%py3_install
+%pyproject_install
+%pyproject_save_files pyrfc3339
 
 %check
 cp -a %{SOURCE1} .
 %pytest -v tests.py
 
-%files -n %{py3_prefix}-pyrfc3339
+%files -n %{py3_prefix}-pyrfc3339 -f %{pyproject_files}
 %doc README.rst
-%license LICENSE.txt
-%{python3_sitelib}/pyrfc3339
-%{python3_sitelib}/%{srcname}-%{version}-*.egg-info
-
 
 %changelog
 * Thu Apr 07 2022 Matthew Davis <fedoraproject@virtual.drop.net> - 1.1-11
 - Converted tests from python-nose to pytest
+- Removed Python 2 support
+- Converted to pyproject macros
 
 * Fri Jan 21 2022 Fedora Release Engineering <releng@fedoraproject.org> - 1.1-10
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_36_Mass_Rebuild