diff --git a/m17n-lib.spec b/m17n-lib.spec
index cdcf112..0ed6b11 100644
--- a/m17n-lib.spec
+++ b/m17n-lib.spec
@@ -1,5 +1,5 @@
 Name:          m17n-lib
-Version:       1.8.3
+Version:       1.8.4
 Release:       1mamba
 Summary:       A library which realizes multilingualization of many aspects of applications
 Group:         Development/Tools
@@ -125,6 +125,9 @@ This package contains libraries and header files for developing applications tha
 %doc ChangeLog NEWS README TODO
 
 %changelog
+* Thu Aug 24 2023 Automatic Build System <autodist@mambasoft.it> 1.8.4-1mamba
+- automatic version update by autodist
+
 * Wed Jul 26 2023 Automatic Build System <autodist@mambasoft.it> 1.8.3-1mamba
 - automatic version update by autodist