diff --git a/upx.spec b/upx.spec
index 2c3a972..3d2f6a3 100644
--- a/upx.spec
+++ b/upx.spec
@@ -1,5 +1,5 @@
 Name:          upx
-Version:       4.2.0
+Version:       4.2.1
 Release:       1mamba
 Summary:       An executable packer for several different executable formats
 Group:         Applications/Archiving
@@ -46,6 +46,9 @@ UPX is a free, portable, extendable, high-performance executable packer for seve
 #%doc BUGS NEWS README README.1ST README.SRC THANKS TODO
 
 %changelog
+* Thu Nov 02 2023 Automatic Build System <autodist@mambasoft.it> 4.2.1-1mamba
+- automatic version update by autodist
+
 * Fri Oct 27 2023 Automatic Build System <autodist@mambasoft.it> 4.2.0-1mamba
 - automatic version update by autodist