diff --git a/mupdf-1.21.1-source.tar.lz b/mupdf-1.21.1-source.tar.lz
new file mode 100644
index 0000000..8251c0a
Binary files /dev/null and b/mupdf-1.21.1-source.tar.lz differ
diff --git a/mupdf.spec b/mupdf.spec
index db6bcdf..a3681b6 100644
--- a/mupdf.spec
+++ b/mupdf.spec
@@ -1,5 +1,5 @@
 Name:          mupdf
-Version:       1.19.1
+Version:       1.21.1
 Release:       1mamba
 Summary:       A lightweight PDF, XPS, and E-book viewer
 Group:         Graphical Desktop/Applications/Publishing
@@ -7,7 +7,7 @@ Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
 URL:           https://mupdf.com/
-Source:        https://mupdf.com/downloads/archive/mupdf-%{version}-source.tar.xz
+Source:        https://mupdf.com/downloads/archive/mupdf-%{version}-source.tar.lz
 #Source:        http://mupdf.com/downloads/mupdf-%{version}-source.tar.gz
 License:       Affero GNU Public License
 ## AUTOBUILDREQ-BEGIN
@@ -38,7 +38,6 @@ Requires:      %{name} = %{?epoch:%epoch:}%{version}-%{release}
 %description -n lib%{name}-devel
 This package contains libraries and header files for developing applications that use %{name}.
 
-
 #% debug_package
 
 %prep
@@ -86,6 +85,9 @@ This package contains libraries and header files for developing applications tha
 
 
 %changelog
+* Wed Jan 11 2023 Silvan Calarco <silvan.calarco@mambasoft.it> 1.21.1-1mamba
+- update to 1.21.1
+
 * Tue Apr 12 2022 Automatic Build System <autodist@mambasoft.it> 1.19.1-1mamba
 - automatic version update by autodist