diff --git a/python-matplotlib.spec b/python-matplotlib.spec
index 22e60cc..916285e 100644
--- a/python-matplotlib.spec
+++ b/python-matplotlib.spec
@@ -1,17 +1,17 @@
 Name:          python-matplotlib
-Version:       3.4.2
+Version:       3.4.3
 Release:       1mamba
 Summary:       Python plotting library
 Group:         System/Libraries/Python
 Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
-URL:           https://matplotlib.sourceforge.net/
+URL:           https://matplotlib.org/
 Source0:       https://github.com/matplotlib/matplotlib.git/v%{version}/matplotlib-%{version}.tar.bz2
-#Source0:       http://downloads.sourceforge.net/project/matplotlib/matplotlib/matplotlib-%{version}/matplotlib-%{version}.tar.gz
 Source1:       python-matplotlib-1.0.1-setup.cfg
 License:       Python
 ## AUTOBUILDREQ-BEGIN
+#libdl.so.2()(64bit): /usr/lib64/libdl.so: file not owned by any package
 BuildRequires: glibc-devel
 BuildRequires: libgcc
 BuildRequires: libpython3-devel
@@ -78,6 +78,9 @@ rm -rf %{buildroot}%{python_sitearch}/matplotlib/mpl-data/fonts
 %doc LICENSE/LICENSE
 
 %changelog
+* Sat Aug 28 2021 Silvan Calarco <silvan.calarco@mambasoft.it> 3.4.3-1mamba
+- update to 3.4.3
+
 * Sun May 09 2021 Automatic Build System <autodist@mambasoft.it> 3.4.2-1mamba
 - automatic version update by autodist