diff --git a/scons.spec b/scons.spec
index b204792..11ca19e 100644
--- a/scons.spec
+++ b/scons.spec
@@ -1,5 +1,5 @@
 Name:          scons
-Version:       3.0.5
+Version:       3.1.1
 Release:       1mamba
 Summary:       An Open Source software construction tool
 Group:         Development/Tools
@@ -52,6 +52,9 @@ rm -f .packlist
 %doc LICENSE.txt
 
 %changelog
+* Fri Aug 30 2019 Automatic Build System <autodist@mambasoft.it> 3.1.1-1mamba
+- automatic version update by autodist
+
 * Sat Jun 29 2019 Silvan Calarco <silvan.calarco@mambasoft.it> 3.0.5-1mamba
 - update to 3.0.5