diff --git a/python-docutils.spec b/python-docutils.spec
index 557b757..84e3641 100644
--- a/python-docutils.spec
+++ b/python-docutils.spec
@@ -1,6 +1,6 @@
 Name:          python-docutils
 Version:       0.16
-Release:       1mamba
+Release:       2mamba
 Summary:       Python Documentation Utilities
 Group:         System/Libraries/Python
 Vendor:        openmamba
@@ -10,7 +10,7 @@ URL:           http://docutils.sourceforge.net/
 Source:        https://pypi.debian.net/docutils/docutils-%{version}.tar.gz
 License:       Python, BSD, GPL, public domain
 ## AUTOBUILDREQ-BEGIN
-BuildRequires: libpython27-devel
+BuildRequires: libpython3-devel
 ## AUTOBUILDREQ-END
 BuildRequires: python-setuptools
 Requires:      python >= %python_version
@@ -45,7 +45,11 @@ sed -i "\,^%{_bindir},d" %{name}.filelist
 
 # remove .py extension for executable
 for file in %{buildroot}%{_bindir}/*.py; do
+%if "%{?pyappend}" == "py3"
+  mv $file %{buildroot}%{_bindir}/$(basename $file .py)
+%else
   mv $file %{buildroot}%{_bindir}/$(basename $file .py)%{?pyappend:-%pyappend}
+%endif
 done
 
 # remove no license file
@@ -61,6 +65,9 @@ rm -f licenses/docutils.conf
 %doc *.txt licenses docs tools/editors
 
 %changelog
+* Fri Nov 27 2020 Silvan Calarco <silvan.calarco@mambasoft.it> 0.16-2mamba
+- binaries default to py3
+
 * Sun Mar 29 2020 Silvan Calarco <silvan.calarco@mambasoft.it> 0.16-1mamba
 - update to 0.16