diff --git a/libusb.spec b/libusb.spec
index ff19066..78adae8 100644
--- a/libusb.spec
+++ b/libusb.spec
@@ -1,5 +1,5 @@
 Name:          libusb
-Version:       1.0.20
+Version:       1.0.21
 Release:       1mamba
 Summary:       A library that provides generic access to USB devices
 Group:         System/Libraries
@@ -7,7 +7,8 @@ Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
 URL:           http://libusbx.sourceforge.net/
-Source:        http://downloads.sourceforge.net/libusb/libusb-%{version}.tar.bz2
+Source:        https://github.com/libusb/libusb.git/v%{version}/libusb-%{version}.tar.bz2
+#Source:        http://downloads.sourceforge.net/libusb/libusb-%{version}.tar.bz2
 License:       LGPL
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
@@ -49,6 +50,7 @@ This package contains libraries and header files for developing applications tha
 %setup -q
 
 %build
+./autogen.sh
 %configure
 %make -j1
 
@@ -80,6 +82,9 @@ ln -sf libusb-1.0.so.0 %{buildroot}%{_libdir}/libusb-1.0.so.2
 %doc ChangeLog NEWS README TODO
 
 %changelog
+* Tue Nov 22 2016 Silvan Calarco <silvan.calarco@mambasoft.it> 1.0.21-1mamba
+- update to 1.0.21
+
 * Tue Oct 20 2015 Automatic Build System <autodist@mambasoft.it> 1.0.20-1mamba
 - automatic version update by autodist