diff --git a/README.md b/README.md
index bb34c13..1cba2c8 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,4 @@
 # xa
 
+Cross-assembler for the 6502 microprocessor.
+
diff --git a/xa.spec b/xa.spec
new file mode 100644
index 0000000..e91001e
--- /dev/null
+++ b/xa.spec
@@ -0,0 +1,52 @@
+Name:          xa
+Version:       2.3.11
+Release:       1mamba
+Summary:       Cross-assembler for the 6502 microprocessor
+Group:         Development/Tools
+Vendor:        openmamba
+Distribution:  openmamba
+Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
+URL:           https://www.floodgap.com/retrotech/xa/
+Source:        https://www.floodgap.com/retrotech/xa/dists/xa-%{version}.tar.gz
+License:       GPL
+## AUTOBUILDREQ-BEGIN
+BuildRequires: glibc-devel
+## AUTOBUILDREQ-END
+
+%description
+Cross-assembler for the 6502 microprocessor.
+
+%debug_package
+
+%prep
+%setup -q
+
+%build
+%make
+
+%install
+[ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
+%makeinstall DESTDIR=%{buildroot}%{_prefix}
+
+%clean
+[ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
+
+%files
+%defattr(-,root,root)
+%{_bindir}/file65
+%{_bindir}/ldo65
+%{_bindir}/printcbm
+%{_bindir}/reloc65
+%{_bindir}/uncpk
+%{_bindir}/xa
+%{_mandir}/man1/file65.1*
+%{_mandir}/man1/ldo65.1*
+%{_mandir}/man1/printcbm.1*
+%{_mandir}/man1/reloc65.1*
+%{_mandir}/man1/uncpk.1*
+%{_mandir}/man1/xa.1*
+%doc COPYING
+
+%changelog
+* Fri Nov 26 2021 Silvan Calarco <silvan.calarco@mambasoft.it> 2.3.11-1mamba
+- package created using the webbuild interface