diff --git a/zchunk.spec b/zchunk.spec
index 697bbea..d355966 100644
--- a/zchunk.spec
+++ b/zchunk.spec
@@ -1,6 +1,6 @@
 Name:          zchunk
-Version:       1.1.11
-Release:       2mamba
+Version:       1.1.12
+Release:       1mamba
 Summary:       A file format designed for highly efficient deltas while maintaining good compression
 Group:         Applications/Archiving
 Vendor:        openmamba
@@ -86,6 +86,9 @@ This package contains libraries and header files for developing applications tha
 %doc README.md
 
 %changelog
+* Sun May 16 2021 Automatic Build System <autodist@mambasoft.it> 1.1.12-1mamba
+- automatic version update by autodist
+
 * Sun May 02 2021 Automatic Build System <autodist@mambasoft.it> 1.1.11-2mamba
 - automatic version update by autodist