-Source0: http://ftp.gnome.org/pub/GNOME/sources/glibmm/2.14/%{realname}-%{version}.tar.bz2
-# Source0-md5: 58b4fdc97738795a19b1f5ad37f186b4
-URL: http://gtkmm.sourceforge.net/
-BuildRequires: autoconf >= 2.50
-BuildRequires: automake
+Source0: http://ftp.gnome.org/pub/GNOME/sources/glibmm/2.28/%{realname}-%{version}.tar.bz2
+# Source0-md5: b5ec0d60558c92098da0bdab389aae94
+URL: http://www.gtkmm.org/
+BuildRequires: autoconf >= 2.59
+BuildRequires: automake >= 1:1.11