diff --git a/xfce4-mixer.spec b/xfce4-mixer.spec
index 7bea1fb..b9e75e0 100644
--- a/xfce4-mixer.spec
+++ b/xfce4-mixer.spec
@@ -1,6 +1,6 @@
 %define majver %(echo %version | cut -d. -f1-2)
 Name:          xfce4-mixer
-Version:       4.15.0
+Version:       4.15.0.76572502
 Release:       1mamba
 Summary:       Volume control plugin for the Xfce 4 panel
 Group:         Graphical Desktop/Applications/Multimedia
@@ -15,7 +15,6 @@ Patch1:        xfce4-mixer-4.11.0.20210123git-no-full-debug-default-for-git.patc
 License:       GPL
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
-BuildRequires: ldconfig
 BuildRequires: libICE-devel
 BuildRequires: libSM-devel
 BuildRequires: libX11-devel
@@ -34,7 +33,7 @@ BuildRequires: libgdk-pixbuf-devel
 BuildRequires: libglib-devel
 BuildRequires: libgraphite2-devel
 BuildRequires: libgstreamer-devel
-BuildRequires: libgtk-devel
+BuildRequires: libgtk3-devel
 BuildRequires: libharfbuzz-devel
 BuildRequires: libpango-devel
 BuildRequires: libpcre-devel
@@ -111,6 +110,9 @@ fi
 #ChangeLog NEWS README
 
 %changelog
+* Sun Dec 19 2021 Automatic Build System <autodist@mambasoft.it> 4.15.0.76572502-1mamba
+- automatic version update by autodist
+
 * Sat Apr 03 2021 Automatic Build System <autodist@mambasoft.it> 4.15.0-1mamba
 - automatic version update by autodist