diff --git a/Cython.spec b/Cython.spec
index 427cb37..9a0a9f9 100644
--- a/Cython.spec
+++ b/Cython.spec
@@ -14,13 +14,14 @@ URL:            http://www.cython.org
 Source:         https://github.com/cython/cython/archive/%{version}/Cython-%{version}.tar.gz
 
 BuildRequires:  python3-devel
-BuildRequires:  python3-setuptools
 
 %if %{with tests}
 BuildRequires:  gcc-c++
 BuildRequires:  gdb
 # optionally uses Python's test.support for some test
 BuildRequires:  python3-test
+# the Python tests requirements are curated manually
+# the test-requirements*.txt files mix in coverage and optional deps
 BuildRequires:  python3-numpy
 BuildRequires:  python3-pythran
 %if %{undefined rhel}
@@ -38,10 +39,8 @@ BuildRequires:  python3-jedi
 
 %if %{with cython_compile}
 BuildRequires:  gcc
-%global python3_site %{python3_sitearch}
 %else
 BuildArch:      noarch
-%global python3_site %{python3_sitelib}
 %endif
 
 %global _description %{expand:
@@ -83,12 +82,17 @@ Provides:       bundled(python3dist(tempita))
 %autosetup -n cython-%{version} -p1
 
 
+%generate_buildrequires
+%pyproject_buildrequires
+
+
 %build
-%py3_build -- %{!?with_cython_compile:--no-cython-compile}
+%pyproject_wheel %{!?with_cython_compile:-C--global-option=--no-cython-compile}
 
 
 %install
-%py3_install -- %{!?with_cython_compile:--no-cython-compile}
+%pyproject_install
+%pyproject_save_files Cython cython pyximport
 
 
 %if %{with tests}
@@ -106,16 +110,11 @@ Provides:       bundled(python3dist(tempita))
 %endif
 
 
-%files -n python3-cython
-%license LICENSE.txt
+%files -n python3-cython -f %{pyproject_files}
 %doc *.txt Demos Doc Tools
 %{_bindir}/cython
 %{_bindir}/cygdb
 %{_bindir}/cythonize
-%{python3_site}/Cython-*.egg-info/
-%{python3_site}/Cython/
-%{python3_site}/pyximport/
-%pycached %{python3_site}/cython.py
 
 
 %changelog