diff --git a/libchamplain.spec b/libchamplain.spec
index 1546732..0e36a95 100644
--- a/libchamplain.spec
+++ b/libchamplain.spec
@@ -1,5 +1,5 @@
 Name:          libchamplain
-Version:       0.12.20
+Version:       0.12.21
 Release:       1mamba
 Summary:       a C library providing a ClutterActor to display maps
 Group:         System/Libraries
@@ -12,19 +12,17 @@ License:       LGPL
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: clutter-gtk-devel
 BuildRequires: glibc-devel
-BuildRequires: ldconfig
 BuildRequires: libcairo-devel
 BuildRequires: libclutter-devel
 BuildRequires: libcogl-devel
 BuildRequires: libgdk-pixbuf-devel
 BuildRequires: libglib-devel
-BuildRequires: libgtk-devel
+BuildRequires: libgtk3-devel
 BuildRequires: libpango-devel
 BuildRequires: libsoup-devel
 BuildRequires: libsqlite-devel
 ## AUTOBUILDREQ-END
 BuildRequires: scons
-BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
 %description
 libchamplain is a C library providing a ClutterActor to display maps. 
@@ -79,5 +77,8 @@ This package contains libraries and header files for developing applications tha
 
 
 %changelog
+* Thu Jan 19 2023 Automatic Build System <autodist@mambasoft.it> 0.12.21-1mamba
+- automatic version update by autodist
+
 * Tue Feb 23 2021 Ercole 'ercolinux' Carpanetto <ercole69@gmail.com> 0.12.20-1mamba
 - package created using the webbuild interface