diff --git a/firefox.spec b/firefox.spec
index 5303577..1cb99a9 100644
--- a/firefox.spec
+++ b/firefox.spec
@@ -17,7 +17,7 @@
 %define        pkgver %(echo %version | tr . _)
 
 Name:          firefox
-Version:       120.0.1
+Version:       121.0
 Release:       1mamba
 Epoch:         1
 Summary:       The next generation browsing technology from mozilla.org
@@ -522,7 +522,7 @@ includedir=%{firefoxincludedir}
 
 Name: Mozilla Plug-In API
 Description: Mozilla Plug-In API
-Version: 120.0.1
+Version: 121.0
 
 Cflags: -I\${includedir} -DXP_UNIX
 _EOF
@@ -637,6 +637,9 @@ fi
 %{_libdir}/pkgconfig/mozilla-plugin.pc
 
 %changelog
+* Mon Dec 18 2023 Automatic Build System <autodist@mambasoft.it> 121.0-1mamba
+- automatic version update by autodist
+
 * Mon Dec 04 2023 Automatic Build System <autodist@mambasoft.it> 120.0.1-1mamba
 - automatic version update by autodist