diff --git a/graphviz.spec b/graphviz.spec
index 852d8f2..98068de 100644
--- a/graphviz.spec
+++ b/graphviz.spec
@@ -1,7 +1,7 @@
 %define        libname  lib%{name}
 
 Name:          graphviz
-Version:       2.47.1
+Version:       2.47.2
 Release:       1mamba
 Summary:       Graph Visualization Tools
 Group:         Applications/Graphics
@@ -21,7 +21,6 @@ Patch6:        graphviz-2.38.0-lua-5.3.patch
 License:       Common Public Attribution License 1.0
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
-BuildRequires: libGL-devel
 BuildRequires: libGLU-devel
 BuildRequires: libICE-devel
 BuildRequires: libR-devel
@@ -53,6 +52,7 @@ BuildRequires: libgd-devel
 BuildRequires: libgdk-pixbuf-devel
 BuildRequires: libglade-devel
 BuildRequires: libglib-devel
+BuildRequires: libglvnd-devel
 BuildRequires: libgmp-devel
 BuildRequires: libgomp-devel
 BuildRequires: libgraphite2-devel
@@ -466,6 +466,9 @@ exit 0
 %{_datadir}/%{name}/doc/pdf/*
 
 %changelog
+* Fri May 28 2021 Automatic Build System <autodist@mambasoft.it> 2.47.2-1mamba
+- automatic version update by autodist
+
 * Tue Apr 20 2021 Automatic Build System <autodist@mambasoft.it> 2.47.1-1mamba
 - automatic version update by autodist