diff --git a/zchunk.spec b/zchunk.spec
index 88ebc3e..18ccf5d 100644
--- a/zchunk.spec
+++ b/zchunk.spec
@@ -1,5 +1,5 @@
 Name:          zchunk
-Version:       1.1.14
+Version:       1.1.15
 Release:       1mamba
 Summary:       A file format designed for highly efficient deltas while maintaining good compression
 Group:         Applications/Archiving
@@ -86,6 +86,9 @@ This package contains libraries and header files for developing applications tha
 %doc README.md
 
 %changelog
+* Wed Jun 02 2021 Automatic Build System <autodist@mambasoft.it> 1.1.15-1mamba
+- automatic version update by autodist
+
 * Sat May 22 2021 Automatic Build System <autodist@mambasoft.it> 1.1.14-1mamba
 - automatic version update by autodist