diff --git a/gnuplot.spec b/gnuplot.spec
index a8b33a0..75f7daa 100644
--- a/gnuplot.spec
+++ b/gnuplot.spec
@@ -1,5 +1,5 @@
 Name:          gnuplot
-Version:       5.4.8
+Version:       5.4.9
 Release:       1mamba
 Summary:       Command-line driven interactive datafile and function plotting utility
 Group:         Applications/Mathematics
@@ -15,7 +15,6 @@ Patch1:        gnuplot-4.6.3-lua-5.1.patch
 License:       GPL
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
-BuildRequires: libQt5Svg-devel
 BuildRequires: libX11-devel
 BuildRequires: libat-spi2-core-devel
 BuildRequires: libcairo-devel
@@ -31,7 +30,9 @@ BuildRequires: libpango-devel
 BuildRequires: libreadline-devel
 BuildRequires: libstdc++6-devel
 BuildRequires: libz-devel
-BuildRequires: qt5-qtbase-devel
+BuildRequires: qt6-qt5compat-devel
+BuildRequires: qt6-qtbase-devel
+BuildRequires: qt6-qtsvg-devel
 BuildRequires: wxwidgets-devel
 BuildRequires: wxwidgets-gtk3-devel
 ## AUTOBUILDREQ-END
@@ -138,6 +139,9 @@ EOF
 %doc docs/psdoc/ps_*
 
 %changelog
+* Wed Sep 06 2023 Automatic Build System <autodist@mambasoft.it> 5.4.9-1mamba
+- automatic version update by autodist
+
 * Fri Jun 09 2023 Automatic Build System <autodist@mambasoft.it> 5.4.8-1mamba
 - automatic version update by autodist