diff --git a/python-uharfbuzz.spec b/python-uharfbuzz.spec
index 2dcd6ad..b08f574 100644
--- a/python-uharfbuzz.spec
+++ b/python-uharfbuzz.spec
@@ -51,7 +51,10 @@ URL:            https://github.com/harfbuzz/uharfbuzz
 Source0:        uharfbuzz-%{version}-filtered.tar.gz
 Source1:        get_source
 
-BuildRequires:  python3-devel
+BuildSystem:            pyproject
+BuildOption(generate_buildrequires): -t
+BuildOption(install):   -l uharfbuzz
+
 BuildRequires:  gcc-c++
 BuildRequires:  pkgconfig(harfbuzz-subset)
 
@@ -67,33 +70,24 @@ Summary:        %{summary}
 %description -n python3-uharfbuzz %{common_description}
 
 
-%prep
-%autosetup -n uharfbuzz-%{version}
-
+%prep -a
 # Remove Cythonized C++ sources (if any remain):
 # https://docs.fedoraproject.org/en-US/packaging-guidelines/Python/#_using_cython
 find . -type f -exec grep -FrinIl 'Generated by Cython' '{}' '+' |
   xargs -r -t rm -v
 
 
-%generate_buildrequires
+%generate_buildrequires -p
 export SETUPTOOLS_SCM_PRETEND_VERSION='%{version}'
 export USE_SYSTEM_LIBS=1
-%pyproject_buildrequires -t
 
 
-%build
+%build -p
 export SETUPTOOLS_SCM_PRETEND_VERSION='%{version}'
 export USE_SYSTEM_LIBS=1
-%pyproject_wheel
 
 
-%install
-%pyproject_install
-%pyproject_save_files -l uharfbuzz
-
-
-%check
+%check -a
 # Requires SparseFont.ttf, omitted from the source archive, via the sparsefont
 # fixture:
 k="${k-}${k+ and }not test_sparsefont_coretext"