diff --git a/xfwm4.spec b/xfwm4.spec
index e05aaee..ef77e81 100644
--- a/xfwm4.spec
+++ b/xfwm4.spec
@@ -1,6 +1,6 @@
 %define majver %(echo %version | cut -d. -f1-2)
 Name:          xfwm4
-Version:       4.18.0
+Version:       4.20.0
 Release:       1mamba
 Summary:       Next generation window manager for Xfce
 Group:         Graphical Desktop/Applications/Other
@@ -37,6 +37,7 @@ BuildRequires: libxfce4ui-devel
 BuildRequires: libxfce4util-devel
 BuildRequires: libxfconf-devel
 BuildRequires: libxpresent-devel
+BuildRequires: libz-devel
 ## AUTOBUILDREQ-END
 BuildRequires: libxfcegui4-devel >= 4.4.0
 Requires:      libxfcegui4 >= 4.4.0
@@ -92,6 +93,9 @@ fi
 %doc AUTHORS COPYING
 
 %changelog
+* Mon Dec 16 2024 Automatic Build System <autodist@openmamba.org> 4.20.0-1mamba
+- automatic version update by autodist
+
 * Sat Dec 17 2022 Automatic Build System <autodist@mambasoft.it> 4.18.0-1mamba
 - automatic version update by autodist