diff --git a/postgresql.spec b/postgresql.spec
index 31a712d..29b2c84 100644
--- a/postgresql.spec
+++ b/postgresql.spec
@@ -3,7 +3,7 @@
 %define        majver %(echo %version | cut -d. -f 1-2)
 
 Name:          postgresql
-Version:       15.3
+Version:       15.4
 Release:       1mamba
 Summary:       An object-relational database management system (ORDBMS)
 Group:         Applications/Databases
@@ -360,6 +360,9 @@ find /etc/rc[0-6].d/ -type l -xtype l -exec rm -f {} \;
 %{_libdir}/postgresql/tutorial/*
 
 %changelog
+* Sat Aug 12 2023 Automatic Build System <autodist@mambasoft.it> 15.4-1mamba
+- automatic version update by autodist
+
 * Sat May 13 2023 Automatic Build System <autodist@mambasoft.it> 15.3-1mamba
 - automatic version update by autodist