diff --git a/imath.spec b/imath.spec
index 3eb1411..15bb848 100644
--- a/imath.spec
+++ b/imath.spec
@@ -1,5 +1,5 @@
 Name:          imath
-Version:       3.1.7
+Version:       3.1.8
 Release:       1mamba
 Summary:       A C++ and python library of 2D and 3D vector, matrix, and math operations for computer graphics
 Group:         System/Libraries
@@ -73,6 +73,9 @@ This package contains libraries and header files for developing applications tha
 %doc README.md
 
 %changelog
+* Thu May 25 2023 Automatic Build System <autodist@mambasoft.it> 3.1.8-1mamba
+- automatic version update by autodist
+
 * Fri Mar 03 2023 Automatic Build System <autodist@mambasoft.it> 3.1.7-1mamba
 - automatic version update by autodist