diff --git a/libpgf.spec b/libpgf.spec
index 5c14926..0c54022 100644
--- a/libpgf.spec
+++ b/libpgf.spec
@@ -1,21 +1,20 @@
 Name:          libpgf
-Version:       7.19.3
+Version:       7.21.7
 Release:       1mamba
 Summary:       An implementation of the Progressive Graphics File (PGF)
 Group:         System/Libraries
 Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
-URL:           http://www.libpgf.org/index.php
+URL:           https://www.libpgf.org/index.php
 # NOTE: manually renamed
-Source:        https://sourceforge.net/projects/libpgf/files/libpgf/%{version}-latest/libPGF-codec-and-console-src-%{version}.zip
+Source:        https://sourceforge.net/projects/libpgf/files/libpgf/%{version}-latest/libpgf-%{version}.zip
 License:       LGPL
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
 BuildRequires: libgcc
 BuildRequires: libstdc++6-devel
 ## AUTOBUILDREQ-END
-BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
 %description
 libPGF is an implementation of the Progressive Graphics File (PGF).
@@ -33,21 +32,20 @@ This package contains libraries and header files for developing applications tha
 
 %prep
 %setup -q -c
-mv libPGF-codec-and-console-src/* .
-rmdir libPGF-codec-and-console-src
-cd PGF/Codec
-dos2unix configure.ac
+cd libpgf
+touch README
+dos2unix configure.ac autogen.sh Makefile.am
 chmod +x autogen.sh
 ./autogen.sh
 
 %build
-cd PGF/Codec
+cd libpgf
 %configure
 %make
 
 %install
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
-cd PGF/Codec
+cd libpgf
 %makeinstall
 
 rm -rf %{buildroot}%{_docdir}/libpgf-*
@@ -61,7 +59,7 @@ rm -rf %{buildroot}%{_docdir}/libpgf-*
 %files
 %defattr(-,root,root)
 %{_libdir}/libpgf.so.*
-%doc PGF/Codec/COPYING
+%doc libpgf/COPYING
 
 %files devel
 %defattr(-,root,root)
@@ -72,9 +70,12 @@ rm -rf %{buildroot}%{_docdir}/libpgf-*
 %{_libdir}/libpgf.so
 %{_libdir}/pkgconfig/libpgf.pc
 %{_mandir}/man3/*.3*
-%doc PGF/Codec/README
+%doc libpgf/README.txt
 
 %changelog
+* Mon Dec 27 2021 Silvan Calarco <silvan.calarco@mambasoft.it> 7.21.7-1mamba
+- update to 7.21.7
+
 * Tue Sep 08 2020 Automatic Build System <autodist@mambasoft.it> 7.19.3-1mamba
 - automatic version update by autodist