diff --git a/tzdata.spec b/tzdata.spec
index 65b1b64..9774006 100644
--- a/tzdata.spec
+++ b/tzdata.spec
@@ -1,7 +1,7 @@
 %define        javahome    %{_jvmdir}/jdk
 
 Name:          tzdata
-Version:       2023a
+Version:       2023b
 Release:       1mamba
 Summary:       timezone data
 Group:         System/Internationalization
@@ -117,6 +117,9 @@ cp -pr zoneinfo/java %{buildroot}%{_datadir}/javazi
 %endif
 
 %changelog
+* Fri Mar 24 2023 Automatic Build System <autodist@mambasoft.it> 2023b-1mamba
+- automatic version update by autodist
+
 * Thu Mar 23 2023 Automatic Build System <autodist@mambasoft.it> 2023a-1mamba
 - automatic version update by autodist