diff --git a/qt6-qtserialbus.spec b/qt6-qtserialbus.spec
index 6f75765..3de1dda 100644
--- a/qt6-qtserialbus.spec
+++ b/qt6-qtserialbus.spec
@@ -1,7 +1,7 @@
 %define majver %(echo %version | cut -d. -f1-2)
 
 Name:          qt6-qtserialbus
-Version:       6.4.1
+Version:       6.4.2
 Release:       1mamba
 Summary:       Qt6 serial bus components
 Group:         System/Libraries
@@ -75,6 +75,9 @@ DESTDIR="%{buildroot}" cmake --install build
 %{_libdir}/pkgconfig/Qt6SerialBus.pc
 
 %changelog
+* Sat Jan 07 2023 Automatic Build System <autodist@mambasoft.it> 6.4.2-1mamba
+- automatic version update by autodist
+
 * Wed Nov 16 2022 Automatic Build System <autodist@mambasoft.it> 6.4.1-1mamba
 - automatic version update by autodist