diff --git a/umbrello.spec b/umbrello.spec
index 4a35671..cd8981b 100644
--- a/umbrello.spec
+++ b/umbrello.spec
@@ -1,5 +1,5 @@
 Name:          umbrello
-Version:       21.08.1
+Version:       21.08.2
 Release:       1mamba
 Summary:       UML modelling tool and code generator
 Group:         Graphical Desktop/Applications/Development
@@ -12,6 +12,7 @@ License:       GPL
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
 BuildRequires: libQt5WebKit-devel
+BuildRequires: libX11-devel
 BuildRequires: libgcc
 BuildRequires: libkarchive-devel
 BuildRequires: libkauth-devel
@@ -111,6 +112,9 @@ exit 0
 %doc AUTHORS COPYING COPYING.DOC THANKS
 
 %changelog
+* Sun Oct 10 2021 Automatic Build System <autodist@mambasoft.it> 21.08.2-1mamba
+- automatic version update by autodist
+
 * Fri Sep 03 2021 Automatic Build System <autodist@mambasoft.it> 21.08.1-1mamba
 - automatic version update by autodist