diff --git a/synfigstudio.spec b/synfigstudio.spec
index d4b2c2a..79e31d9 100644
--- a/synfigstudio.spec
+++ b/synfigstudio.spec
@@ -1,77 +1,52 @@
 Name:          synfigstudio
-Version:       1.2.2
+Version:       1.4.2
 Release:       1mamba
 Summary:       Animation studio for synfig and provides the GUI interface to create synfig animations
 Group:         Graphical Desktop/Applications/Graphics
 Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
-URL:           http://www.synfig.org/
-Source:        http://downloads.sourceforge.net/project/synfig/releases/%{version}/source/synfigstudio-%{version}.tar.gz
+URL:           https://www.synfig.org/
+Source:        https://sourceforge.net/projects/synfig/files/releases/%{version}/synfigstudio-%{version}.tar.gz
 Patch0:        synfigstudio-1.0.2-gcc-6.2.0.patch
 License:       GPL
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
-BuildRequires: libICE-devel
 BuildRequires: libMagick-devel
-BuildRequires: libSM-devel
-BuildRequires: libX11-devel
-BuildRequires: libXau-devel
-BuildRequires: libXdmcp-devel
-BuildRequires: libXext-devel
-BuildRequires: libXrender-devel
-BuildRequires: libXt-devel
 BuildRequires: libatk-devel
-BuildRequires: libatkmm-devel
-BuildRequires: libblkid-devel
-BuildRequires: libbsd-devel
-BuildRequires: libbzip2-devel
+BuildRequires: libatkmm1-devel
+BuildRequires: libavcodec-ffmpeg-devel
+BuildRequires: libavformat-ffmpeg-devel
 BuildRequires: libcairo-devel
-BuildRequires: libcairomm-devel
-BuildRequires: libexpat-devel
-BuildRequires: libffi-devel
+BuildRequires: libcairomm10-devel
 BuildRequires: libfftw-devel
 BuildRequires: libfontconfig-devel
 BuildRequires: libfreetype-devel
 BuildRequires: libgcc
 BuildRequires: libgdk-pixbuf-devel
 BuildRequires: libglib-devel
-BuildRequires: libglibmm-devel
+BuildRequires: libglibmm24-devel
 BuildRequires: libgomp-devel
-BuildRequires: libgraphite2-devel
-BuildRequires: libgtk-devel
-BuildRequires: libgtkmm-devel
+BuildRequires: libgtk3-devel
+BuildRequires: libgtkmm3-devel
 BuildRequires: libharfbuzz-devel
-BuildRequires: libilmbase-devel
+BuildRequires: libimath-devel
 BuildRequires: libjack-devel
-BuildRequires: liblcms2-devel
-BuildRequires: liblqr-devel
-BuildRequires: libltdl-devel
-BuildRequires: liblzma-devel
-BuildRequires: libmount-devel
+BuildRequires: libmlt6-devel
 BuildRequires: libopenexr-devel
 BuildRequires: libpango-devel
-BuildRequires: libpangomm-devel
-BuildRequires: libpcre-devel
-BuildRequires: libpng-devel
-BuildRequires: libselinux-devel
-BuildRequires: libsepol-devel
-BuildRequires: libsigc++-devel
+BuildRequires: libpangomm1-devel
+BuildRequires: libsigc++2-devel
 BuildRequires: libstdc++6-devel
+BuildRequires: libswscale-ffmpeg-devel
 BuildRequires: libsynfig-devel
-BuildRequires: libthai-devel
-BuildRequires: libuuid-devel
-BuildRequires: libxcb-devel
 BuildRequires: libxml++2-devel
 BuildRequires: libxml2-devel
-BuildRequires: libz-devel
-BuildRequires: mlt-devel
 ## AUTOBUILDREQ-END
 BuildRequires: libMagick-devel >= 7.0.9.4-1mamba
 BuildRequires: synfig = %{version}
 Requires:      lib%{name} = %{?epoch:%epoch:}%{version}-%{release}
 Requires:      synfig = %{version}
-BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
 %description
 synfigstudio is the animation studio for synfig and provides the GUI interface to create synfig animations which are saved in synfig .sif or .sifz format.
@@ -142,27 +117,30 @@ exit 0
 %files -f %{name}.lang
 %defattr(-,root,root)
 %{_bindir}/synfigstudio
-%{_datadir}/appdata/synfigstudio.appdata.xml
-%{_datadir}/applications/synfigstudio.desktop
-%{_datadir}/icons/hicolor/*/apps/synfig_icon.png
-%{_datadir}/icons/hicolor/scalable/apps/synfig_icon.svg
-%{_datadir}/mime-info/synfigstudio.keys
-%{_datadir}/mime-info/synfigstudio.mime
-%{_datadir}/mime/packages/synfigstudio.xml
-%{_datadir}/pixmaps/sif_icon.png
-%{_datadir}/pixmaps/synfig_icon.png
-%{_datadir}/pixmaps/synfigstudio/installer_logo.bmp
-%{_datadir}/pixmaps/synfigstudio/*.png
+%{_datadir}/appdata/org.synfig.SynfigStudio.appdata.xml
+%{_datadir}/applications/org.synfig.SynfigStudio.desktop
+%{_datadir}/mime/packages/org.synfig.SynfigStudio.xml
+%{_datadir}/mime-info/synfigstudio.*
+%dir %{_datadir}/synfig
+%dir %{_datadir}/synfig/sounds
+%{_datadir}/synfig/sounds/*
+%dir %{_datadir}/synfig/ui
+%{_datadir}/synfig/ui/*
 %dir %{_datadir}/synfig/brushes
 %dir %{_datadir}/synfig/brushes/CD_concept
 %{_datadir}/synfig/brushes/CD_concept/*
+%dir %{_datadir}/synfig/plugins
+%dir %{_datadir}/synfig/plugins/lottie-exporter
+%{_datadir}/synfig/plugins/lottie-exporter/*
 %dir %{_datadir}/synfig/plugins/add-skeleton-simple
-%{_datadir}/synfig/plugins/add-skeleton-simple/add-skeleton-simple.py
-%{_datadir}/synfig/plugins/add-skeleton-simple/plugin.xml
-%{_datadir}/synfig/plugins/add-skeleton-simple/stickman.sif
+%{_datadir}/synfig/plugins/add-skeleton-simple/*
 %dir %{_datadir}/synfig/plugins/view-unhide-all-layers
-%{_datadir}/synfig/plugins/view-unhide-all-layers/plugin.xml
-%{_datadir}/synfig/plugins/view-unhide-all-layers/view-unhide-all-layers.py
+%{_datadir}/synfig/plugins/view-unhide-all-layers/*
+%{_datadir}/pixmaps/*.png
+%dir %{_datadir}/pixmaps/synfigstudio
+%{_datadir}/pixmaps/synfigstudio/*
+%{_datadir}/icons/hicolor/*/apps/synfig_icon.png
+%{_datadir}/icons/hicolor/scalable/apps/org.synfig.SynfigStudio.svg
 
 %files -n lib%{name}
 %defattr(-,root,root)
@@ -180,6 +158,9 @@ exit 0
 
 
 %changelog
+* Sun Nov 28 2021 Silvan Calarco <silvan.calarco@mambasoft.it> 1.4.2-1mamba
+- update to 1.4.2
+
 * Wed Jul 22 2020 Automatic Build System <autodist@mambasoft.it> 1.2.2-1mamba
 - automatic version update by autodist