diff --git a/cantor.spec b/cantor.spec
index 1653711..9f89d33 100644
--- a/cantor.spec
+++ b/cantor.spec
@@ -1,11 +1,11 @@
 Name:          cantor
-Version:       21.04.3
-Release:       2mamba
+Version:       21.08.0
+Release:       1mamba
 Summary:       KDE Frontend to Mathematical Software
 Group:         Graphical Desktop/Applications/Educational
 Vendor:        openmamba
 Distribution:  openmamba
-Packager:      Davide Madrisan <davide.madrisan@gmail.com>
+Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
 URL:           https://kde.org/
 Source:        http://download.kde.org/stable/release-service/%{version}/src/cantor-%{version}.tar.xz
 Patch0:        cantor-20.04.0-luajit-5.1.patch
@@ -84,7 +84,7 @@ This package contains static libraries and header files needed for development.
 
 %prep
 %setup -q
-%patch0 -p1
+#%patch0 -p1
 
 %build
 %cmake_kde5 -d build
@@ -131,7 +131,8 @@ exit 0
 %{_libdir}/cantor_pythonbackend.so
 %dir %{_libdir}/qt5/plugins/cantor
 %{_libdir}/qt5/plugins/cantor/*
-%{_libdir}/qt5/plugins/libcantorpart.so
+%{_libdir}/qt5/plugins/kf5/parts/cantorpart.so
+%{_datadir}/config.kcfg/octavebackend.kcfg.in
 %{_datadir}/applications/org.kde.cantor.desktop
 %{_datadir}/knsrcfiles/cantor*
 %dir %{_datadir}/kxmlgui5/cantor
@@ -149,6 +150,9 @@ exit 0
 %{_libdir}/cmake/Cantor/Cantor*.cmake
 
 %changelog
+* Thu Aug 19 2021 Automatic Build System <autodist@mambasoft.it> 21.08.0-1mamba
+- automatic version update by autodist
+
 * Sun Aug 01 2021 Silvan Calarco <silvan.calarco@mambasoft.it> 21.04.3-2mamba
 - rebuilt by autoport with build requirements: libqalculate-devel>=3.20.1-1mamba