diff --git a/soundfont-Unison.spec b/soundfont-Unison.spec
index 3fa6103..20fd9f0 100644
--- a/soundfont-Unison.spec
+++ b/soundfont-Unison.spec
@@ -1,6 +1,6 @@
 Name:          soundfont-Unison
 Version:       1.0
-Release:       4mamba
+Release:       5mamba
 Summary:       A soundfont collection for MIDI synthetizers
 Group:         System/Multimedia
 Vendor:        openmamba
@@ -9,7 +9,8 @@ Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
 URL:           http://www.personalcopy.com/home.htm
 Source:        ftp://ftp.personalcopy.net/pub/Unison.sf2.gz
 License:       Free
-BuildRoot:     %{_tmppath}/%{name}-%{version}-build
+## AUTOBUILDREQ-BEGIN
+## AUTOBUILDREQ-END
 
 %description
 A soundfont collection for MIDI synthetizers
@@ -28,6 +29,9 @@ gunzip %{buildroot}%{_datadir}/soundfonts/Unison.sf2.gz
 %{_datadir}/soundfonts/*
 
 %changelog
+* Sun Jun 06 2021 Silvan Calarco <silvan.calarco@mambasoft.it> 1.0-5mamba
+- added build requirements block
+
 * Wed Jul 31 2013 Automatic Build System <autodist@mambasoft.it> 1.0-4mamba
 - automatic rebuild by autodist