diff --git a/mbox-importer.spec b/mbox-importer.spec
index c7d033b..cf41437 100644
--- a/mbox-importer.spec
+++ b/mbox-importer.spec
@@ -1,7 +1,7 @@
 %define majver %(echo %version | cut -d. -f1-2)
 
 Name:          mbox-importer
-Version:       21.08.3
+Version:       21.12.0
 Release:       1mamba
 Summary:       KDE Frameworks 5 MBox importer
 Group:         Graphical Desktop/Applications/Internet
@@ -20,6 +20,7 @@ BuildRequires: libakonadi-mime-devel
 BuildRequires: libassuan-devel
 BuildRequires: libgcc
 BuildRequires: libgpgme-devel
+BuildRequires: libgrantlee-devel
 BuildRequires: libgrantleetheme-devel
 BuildRequires: libkarchive-devel
 BuildRequires: libkauth-devel
@@ -80,6 +81,9 @@ KDE Frameworks 5 MBox importer.
 %doc LICENSES
 
 %changelog
+* Thu Dec 16 2021 Automatic Build System <autodist@mambasoft.it> 21.12.0-1mamba
+- automatic version update by autodist
+
 * Wed Nov 10 2021 Automatic Build System <autodist@mambasoft.it> 21.08.3-1mamba
 - automatic version update by autodist