diff --git a/z3.spec b/z3.spec
index 7375a18..5a8a2b5 100644
--- a/z3.spec
+++ b/z3.spec
@@ -1,5 +1,5 @@
 Name:          z3
-Version:       4.8.12
+Version:       4.8.13
 Release:       1mamba
 Summary:       A theorem prover from Microsoft Research
 Group:         System/Libraries
@@ -79,6 +79,9 @@ python contrib/cmake/bootstrap.py create
 %doc README-CMake.md README.md
 
 %changelog
+* Fri Nov 19 2021 Automatic Build System <autodist@mambasoft.it> 4.8.13-1mamba
+- automatic version update by autodist
+
 * Thu Jul 15 2021 Automatic Build System <autodist@mambasoft.it> 4.8.12-1mamba
 - automatic version update by autodist