diff --git a/pygrib.spec b/pygrib.spec
index e2b3f66..7beaa82 100644
--- a/pygrib.spec
+++ b/pygrib.spec
@@ -134,14 +134,14 @@ cp setup.cfg.template setup.cfg
 echo "grib_api_libname = grib_api" >> setup.cfg
 %endif
 
-CFLAGS="%{optflags}" %{__python3} setup.py build
+%py3_build
 
 %install
 
 # this setting triggers installation of man pages by the setup.py file
 export MAN_DIR=/usr/share/man/
 
-%{__python3} setup.py install --skip-build --root %{buildroot}
+%py3_install
 
 # correct wrong write permission for group
 chmod 755  %{buildroot}/%{python3_sitearch}/*.so