diff --git a/libgtkmm.spec b/libgtkmm.spec
index 9a73399..7a98c7a 100644
--- a/libgtkmm.spec
+++ b/libgtkmm.spec
@@ -2,7 +2,7 @@
 %define        apiver  %(echo %version | cut -d. -f 1).0
 
 Name:          libgtkmm
-Version:       4.10.0
+Version:       4.12.0
 Release:       1mamba
 Summary:       gtkmm is the official C++ interface for the popular GUI library GTK+
 Group:         System/Libraries
@@ -83,6 +83,9 @@ This package contains static libraries and header files needed for development.
 %{_libdir}/gtkmm-%{apiver}/proc/m4/*.m4
 
 %changelog
+* Thu Aug 31 2023 Automatic Build System <autodist@mambasoft.it> 4.12.0-1mamba
+- automatic version update by autodist
+
 * Thu Mar 09 2023 Automatic Build System <autodist@mambasoft.it> 4.10.0-1mamba
 - automatic version update by autodist