diff --git a/ocaml-ctypes.spec b/ocaml-ctypes.spec
index 8030353..2680707 100644
--- a/ocaml-ctypes.spec
+++ b/ocaml-ctypes.spec
@@ -2,8 +2,8 @@
 %define ocamlpck  ctypes
 
 Name:          ocaml-ctypes
-Version:       0.20.0
-Release:       2mamba
+Version:       0.20.1
+Release:       1mamba
 Summary:       Combinators for binding to C libraries without writing any C
 Group:         System/Libraries/OCaml
 Vendor:        openmamba
@@ -85,6 +85,9 @@ make install
 %doc CHANGES.md README.md
 
 %changelog
+* Sat May 07 2022 Automatic Build System <autodist@mambasoft.it> 0.20.1-1mamba
+- automatic version update by autodist
+
 * Wed Feb 09 2022 Silvan Calarco <silvan.calarco@mambasoft.it> 0.20.0-2mamba
 - rebuilt with ocaml integers 0.6.0