diff --git a/threadweaver.spec b/threadweaver.spec
index 2745e10..c446760 100644
--- a/threadweaver.spec
+++ b/threadweaver.spec
@@ -1,7 +1,7 @@
 %define majver %(echo %version | cut -d. -f1-2)
 
 Name:          threadweaver
-Version:       5.20.0
+Version:       5.21.0
 Release:       1mamba
 Summary:       KDE Frameworks 5 helper for multithreaded programming
 Group:         System/Libraries
@@ -85,6 +85,9 @@ exit 0
 %{_libdir}/qt5/mkspecs/modules/qt_ThreadWeaver.pri
 
 %changelog
+* Thu Apr 21 2016 Automatic Build System <autodist@mambasoft.it> 5.21.0-1mamba
+- automatic version update by autodist
+
 * Tue Mar 29 2016 Automatic Build System <autodist@mambasoft.it> 5.20.0-1mamba
 - automatic version update by autodist