diff --git a/graphviz.spec b/graphviz.spec
index 64c2b2b..4a26302 100644
--- a/graphviz.spec
+++ b/graphviz.spec
@@ -1,7 +1,7 @@
 %define        libname  lib%{name}
 
 Name:          graphviz
-Version:       12.0.0
+Version:       12.1.0
 Release:       1mamba
 Summary:       Graph Visualization Tools
 Group:         Applications/Graphics
@@ -41,6 +41,7 @@ BuildRequires: libgomp-devel
 BuildRequires: libgraphite2-devel
 BuildRequires: libgs-devel
 BuildRequires: libgtk2-devel
+BuildRequires: libgtk3-devel
 BuildRequires: libgtkglext-devel
 BuildRequires: libgts-devel
 BuildRequires: libguile-devel
@@ -393,6 +394,9 @@ exit 0
 %{_docdir}/%{name}/*
 
 %changelog
+* Mon Aug 12 2024 Automatic Build System <autodist@openmamba.org> 12.1.0-1mamba
+- automatic version update by autodist
+
 * Thu Jul 04 2024 Automatic Build System <autodist@openmamba.org> 12.0.0-1mamba
 - automatic version update by autodist