diff --git a/libkcompactdisc.spec b/libkcompactdisc.spec
index d894667..a96160f 100644
--- a/libkcompactdisc.spec
+++ b/libkcompactdisc.spec
@@ -1,6 +1,6 @@
 Name:          libkcompactdisc
 Version:       20.08.1
-Release:       1mamba
+Release:       2mamba
 Summary:       KDE Compact Disk library
 Group:         System/Libraries
 Vendor:        openmamba
@@ -11,15 +11,19 @@ Source:        http://download.kde.org/stable/release-service/%{version}/src/lib
 License:       GPL
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
-BuildRequires: kdelibs-devel
+BuildRequires: ldconfig
 BuildRequires: libalsa-devel
 BuildRequires: libgcc
+BuildRequires: libkcoreaddons-devel
+BuildRequires: libki18n-devel
 BuildRequires: libphonon-devel
-BuildRequires: libqt4-devel
+BuildRequires: libqt5-devel
+BuildRequires: libsolid-devel
 BuildRequires: libstdc++6-devel
 ## AUTOBUILDREQ-END
 BuildRequires: cmake
 Obsoletes:     libkompactdisc
+Obsoletes:     libkcompactdisc4
 BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
 %description
@@ -30,6 +34,7 @@ Group:         Development/Libraries
 Summary:       Development files for %{name}
 Requires:      %{name} = %{?epoch:%epoch:}%{version}-%{release}
 Obsoletes:     libkompactdisc-devel
+Obsoletes:     libkcompactdisc4-devel
 
 %description devel
 This package contains libraries and header files for developing applications that use %{name}.
@@ -71,6 +76,9 @@ This package contains libraries and header files for developing applications tha
 %{_kde5_mkspecsdir}/qt_KCompactDisc.pri
 
 %changelog
+* Fri Sep 11 2020 Silvan Calarco <silvan.calarco@mambasoft.it> 20.08.1-2mamba
+- obsolete libkcompactdisc4
+
 * Fri Sep 04 2020 Automatic Build System <autodist@mambasoft.it> 20.08.1-1mamba
 - automatic version update by autodist