diff --git a/caribou.spec b/caribou.spec
index ba93c12..3f96d75 100644
--- a/caribou.spec
+++ b/caribou.spec
@@ -1,6 +1,6 @@
 %define majver %(echo %version | cut -d. -f1-2)
 Name:          caribou
-Version:       0.4.20
+Version:       0.4.21
 Release:       1mamba
 Summary:       An input assistive technology intended for switch and pointer users
 Group:         Graphical Desktop/Applications/Accessibility
@@ -8,7 +8,7 @@ Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
 URL:           http://live.gnome.org
-Source:        ftp://ftp.gnome.org/pub/gnome/sources/caribou/%{majver}/caribou-%{version}.tar.xz
+Source:        https://download.gnome.org/sources/caribou/%{majver}/caribou-%{version}.tar.xz
 License:       LGPL
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
@@ -165,6 +165,9 @@ This package contains libraries and header files for developing applications tha
 %doc ChangeLog NEWS README
 
 %changelog
+* Fri Aug 19 2016 Automatic Build System <autodist@mambasoft.it> 0.4.21-1mamba
+- automatic version update by autodist
+
 * Tue Apr 19 2016 Automatic Build System <autodist@mambasoft.it> 0.4.20-1mamba
 - automatic version update by autodist