diff --git a/libsvm.spec b/libsvm.spec
index 4d5bf12..eee1af4 100644
--- a/libsvm.spec
+++ b/libsvm.spec
@@ -1,5 +1,5 @@
 Name:          libsvm
-Version:       3.30
+Version:       3.31
 Release:       1mamba
 Summary:       A simple, easy-to-use, and efficient software for SVM classification and regression
 Group:         Development/Libraries
@@ -62,7 +62,7 @@ cat << _EOF >> %{name}.pc
 Name: %{name}
 Description: Library for SVM classification and regression
 URL: %{url}
-Version: 3.30
+Version: 3.31
 
 prefix=%{_prefix}
 includedir=%{_includedir}
@@ -134,6 +134,9 @@ done
 #%{python_sitearch}/%{name}
 
 %changelog
+* Thu Mar 02 2023 Automatic Build System <autodist@mambasoft.it> 3.31-1mamba
+- automatic version update by autodist
+
 * Mon Aug 22 2022 Automatic Build System <autodist@mambasoft.it> 3.30-1mamba
 - automatic version update by autodist