diff --git a/liberation-fonts-ttf.spec b/liberation-fonts-ttf.spec
index 7cdb89a..1640f05 100644
--- a/liberation-fonts-ttf.spec
+++ b/liberation-fonts-ttf.spec
@@ -2,21 +2,20 @@
 
 Name:          liberation-fonts-ttf
 Version:       2.1.5
-Release:       1mamba
+Release:       2mamba
 Summary:       Fonts to replace commonly used Microsoft Windows Fonts
 Group:         System/Fonts
 Vendor:        openmamba
 Distribution:  openmamba
-Packager:      Aleph0 <aleph0@openmamba.org>
+Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
 URL:           https://github.com/liberationfonts/liberation-fonts
 Source:        https://github.com/liberationfonts/liberation-fonts.git/%{version}/liberation-fonts-%{version}.tar.bz2
-#Source:        https://fedorahosted.org/releases/l/i/liberation-fonts/liberation-fonts-%{version}.tar.gz
-Source1:       %{name}-conf
+Source1:       liberation-fonts-ttf-conf
 License:       GPL
 ## AUTOBUILDREQ-BEGIN
 ## AUTOBUILDREQ-END
-BuildRequires: fontforge
-BuildRequires: python-fontTools
+BuildRequires: mkfontscale
+BuildRequires: mkfontdir
 Requires(pre): %{_bindir}/fc-cache
 Provides:      liberation-fonts = %{?epoch:%epoch:}%{version}-%{release}
 BuildArch:     noarch
@@ -73,6 +72,9 @@ fi
 %doc LICENSE
 
 %changelog
+* Mon Sep 11 2023 Silvan Calarco <silvan.calarco@mambasoft.it> 2.1.5-2mamba
+- update build requirements
+
 * Fri Oct 01 2021 Automatic Build System <autodist@mambasoft.it> 2.1.5-1mamba
 - automatic version update by autodist