diff --git a/libtiff.spec b/libtiff.spec
index e99da3c..6e374b3 100644
--- a/libtiff.spec
+++ b/libtiff.spec
@@ -1,41 +1,33 @@
 Name:          libtiff
-Version:       4.2.0
+Version:       4.3.0
 Release:       1mamba
 Summary:       A library of functions for manipulating TIFF format image files
 Group:         System/Libraries
 Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
-URL:           http://www.libtiff.org/
+URL:           https://www.libtiff.org/
 Source:        http://download.osgeo.org/libtiff/tiff-%{version}.tar.gz
 Patch0:        %{name}-3.8.2-tiffsplit_overflow.patch
 Patch1:        %{name}-3.8.2-cve_2006_2193.patch
 License:       BSD
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
-BuildRequires: libe2fs-devel
-BuildRequires: libgcc
-BuildRequires: libjpeg-devel
-BuildRequires: libstdc++6-devel
-%if "%{stage1}" != "1"
-BuildRequires: libGL-devel
 BuildRequires: libGLU-devel
-BuildRequires: libGLUT-devel
 BuildRequires: libICE-devel
 BuildRequires: libSM-devel
-BuildRequires: libX11-devel
-BuildRequires: libXau-devel
-BuildRequires: libxcb-devel
-BuildRequires: libXdmcp-devel
-BuildRequires: libXext-devel
 BuildRequires: libXi-devel
-BuildRequires: libXmu-devel
-BuildRequires: libXt-devel
-%endif
-BuildRequires: libuuid-devel
+BuildRequires: libfreeglut-devel
+BuildRequires: libgcc
+BuildRequires: libglvnd-devel
+BuildRequires: libjbig-devel
+BuildRequires: libjpeg-devel
+BuildRequires: liblzma-devel
+BuildRequires: libstdc++6-devel
+BuildRequires: libwebp-devel
 BuildRequires: libz-devel
+BuildRequires: libzstd-devel
 ## AUTOBUILDREQ-END
-BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
 %debug_package
 
@@ -155,6 +147,9 @@ rm -f %{buildroot}%{_mandir}/man1/tiffgt.*
 %endif
 
 %changelog
+* Fri Apr 23 2021 Automatic Build System <autodist@mambasoft.it> 4.3.0-1mamba
+- automatic version update by autodist
+
 * Sat Jan 23 2021 Automatic Build System <autodist@mambasoft.it> 4.2.0-1mamba
 - automatic version update by autodist