diff --git a/libmatroska.spec b/libmatroska.spec
index 85de7f4..f727844 100644
--- a/libmatroska.spec
+++ b/libmatroska.spec
@@ -1,5 +1,5 @@
 Name:          libmatroska
-Version:       1.4.7
+Version:       1.4.8
 Release:       1mamba
 Summary:       Multimedia container format library
 Group:         System/Libraries
@@ -7,7 +7,7 @@ Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Aleph0 <aleph0@openmamba.org>
 URL:           http://www.matroska.org/
-Source:        http://dl.matroska.org/downloads/libmatroska/libmatroska-%{version}.tar.bz2
+Source:        http://dl.matroska.org/downloads/libmatroska/libmatroska-%{version}.tar.xz
 License:       LGPL
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
@@ -76,6 +76,9 @@ chmod +x %{buildroot}%{_libdir}/*.so.*
 %doc ChangeLog 
 
 %changelog
+* Thu Dec 07 2017 Silvan Calarco <silvan.calarco@mambasoft.it> 1.4.8-1mamba
+- update to 1.4.8
+
 * Sat Mar 11 2017 Automatic Build System <autodist@mambasoft.it> 1.4.7-1mamba
 - automatic version update by autodist