diff --git a/khelpcenter.spec b/khelpcenter.spec
index 8b08c30..c84e4e2 100644
--- a/khelpcenter.spec
+++ b/khelpcenter.spec
@@ -1,7 +1,7 @@
 %define majver %(echo %version | cut -d. -f1-2)
 
 Name:          khelpcenter
-Version:       21.08.3
+Version:       21.12.0
 Release:       1mamba
 Summary:       KDE Frameworks 5 help center
 Group:         Graphical Desktop/Applications/Environment
@@ -37,13 +37,13 @@ BuildRequires: libktextwidgets-devel
 BuildRequires: libkwidgetsaddons-devel
 BuildRequires: libkwindowsystem-devel
 BuildRequires: libkxmlgui-devel
-BuildRequires: libqt5-devel
 BuildRequires: libsolid-devel
 BuildRequires: libsonnet-devel
 BuildRequires: libstdc++6-devel
 BuildRequires: libxapian-devel
 BuildRequires: libxml2-devel
 BuildRequires: perl-devel
+BuildRequires: qt5-qtbase-devel
 ## AUTOBUILDREQ-END
 BuildRequires: cmake
 BuildRequires: rpm-macros-kde5
@@ -104,6 +104,9 @@ KDE Frameworks 5 help center.
 %doc LICENSES
 
 %changelog
+* Thu Dec 09 2021 Automatic Build System <autodist@mambasoft.it> 21.12.0-1mamba
+- automatic version update by autodist
+
 * Thu Nov 04 2021 Automatic Build System <autodist@mambasoft.it> 21.08.3-1mamba
 - automatic version update by autodist