diff --git a/kbackup.spec b/kbackup.spec
index 1cfcc39..4700bd3 100644
--- a/kbackup.spec
+++ b/kbackup.spec
@@ -1,7 +1,7 @@
 %define majver %(echo %version | cut -d. -f1-2)
 
 Name:          kbackup
-Version:       20.12.3
+Version:       21.04.0
 Release:       1mamba
 Summary:       KDE Frameworks 5 backup program with an easy to use User Interface
 Group:         Graphical Desktop/Applications/Utilities
@@ -30,6 +30,7 @@ BuildRequires: libkjobwidgets-devel
 BuildRequires: libknotifications-devel
 BuildRequires: libkservice-devel
 BuildRequires: libkwidgetsaddons-devel
+BuildRequires: libkwindowsystem-devel
 BuildRequires: libkxmlgui-devel
 BuildRequires: libqt5-devel
 BuildRequires: libsolid-devel
@@ -75,6 +76,9 @@ KDE Frameworks 5 backup program with an easy to use User Interface.
 
 
 %changelog
+* Thu Apr 22 2021 Automatic Build System <autodist@mambasoft.it> 21.04.0-1mamba
+- automatic version update by autodist
+
 * Fri Mar 05 2021 Automatic Build System <autodist@mambasoft.it> 20.12.3-1mamba
 - automatic version update by autodist