-Source0: http://ftp.gnome.org/pub/GNOME/sources/atk/1.22/%{name}-%{version}.tar.bz2
-# Source0-md5: 06a2b39a22d5ca35c47435da6b9643ac
-URL: http://developer.gnome.org/projects/gap/
-BuildRequires: autoconf >= 2.54
-BuildRequires: automake
-BuildRequires: gettext-devel
-BuildRequires: glib2-devel >= 1:2.15.6
-%{?with_apidocs:BuildRequires: gtk-doc >= 1.8}
-BuildRequires: gtk-doc-automake >= 1.8
-BuildRequires: libtool >= 2:1.5.16
+Source0: http://ftp.gnome.org/pub/GNOME/sources/atk/2.20/%{name}-%{version}.tar.xz
+# Source0-md5: 5187b0972f4d3905f285540b31395e20
+URL: https://developer.gnome.org/atk/
+BuildRequires: autoconf >= 2.63
+BuildRequires: automake >= 1:1.10
+BuildRequires: docbook-dtd412-xml
+BuildRequires: gettext-tools >= 0.19.2
+BuildRequires: glib2-devel >= 1:2.32.0
+BuildRequires: gobject-introspection-devel >= 0.10.0
+%if %{with apidocs}
+BuildRequires: gtk-doc >= 1.13
+BuildRequires: gtk-doc-automake >= 1.13
+%endif
+BuildRequires: libtool >= 2:2.2