diff --git a/calibre.spec b/calibre.spec
index b0884bc..300b6c7 100644
--- a/calibre.spec
+++ b/calibre.spec
@@ -1,5 +1,5 @@
 Name:          calibre
-Version:       2.27.0
+Version:       2.28.0
 Release:       1mamba
 Summary:       A free and open source e-book library management application
 Group:         Graphical Desktop/Applications/Multimedia
@@ -173,6 +173,9 @@ install -D -m0644 %{buildroot}%{_datadir}/calibre/content_server/calibre.png \
 %{_datadir}/calibre/*
 
 %changelog
+* Fri May 15 2015 Automatic Build System <autodist@mambasoft.it> 2.28.0-1mamba
+- automatic version update by autodist
+
 * Sat May 02 2015 Automatic Build System <autodist@mambasoft.it> 2.27.0-1mamba
 - automatic version update by autodist