diff --git a/scons.spec b/scons.spec
index 4f36752..54f4d85 100644
--- a/scons.spec
+++ b/scons.spec
@@ -1,5 +1,5 @@
 Name:          scons
-Version:       2.5.1
+Version:       3.0.0
 Release:       1mamba
 Summary:       An Open Source software construction tool
 Group:         Development/Tools
@@ -57,6 +57,9 @@ rm -f .packlist
 %doc HOWTO LICENSE src/RELEASE.txt src/CHANGES.txt
 
 %changelog
+* Mon Oct 09 2017 Automatic Build System <autodist@mambasoft.it> 3.0.0-1mamba
+- automatic version update by autodist
+
 * Sat Dec 10 2016 Automatic Build System <autodist@mambasoft.it> 2.5.1-1mamba
 - automatic version update by autodist