diff --git a/cervisia.spec b/cervisia.spec
index 881499e..a6695f8 100644
--- a/cervisia.spec
+++ b/cervisia.spec
@@ -1,5 +1,5 @@
 Name:          cervisia
-Version:       20.12.3
+Version:       21.04.0
 Release:       1mamba
 Summary:       KDE CVS Frontend
 Group:         Graphical Desktop/Applications/Development
@@ -30,6 +30,7 @@ BuildRequires: libkpty-devel
 BuildRequires: libkservice-devel
 BuildRequires: libktextwidgets-devel
 BuildRequires: libkwidgetsaddons-devel
+BuildRequires: libkwindowsystem-devel
 BuildRequires: libkxmlgui-devel
 BuildRequires: libqt5-devel
 BuildRequires: libsonnet-devel
@@ -121,6 +122,9 @@ exit 0
 %doc COPYING COPYING.DOC COPYING.LIB
 
 %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