diff --git a/atk.spec b/atk.spec
index dcea680..af2fcb9 100644
--- a/atk.spec
+++ b/atk.spec
@@ -6,7 +6,7 @@ Version: 1.21.5
 Release: 2%{?dist}
 License: LGPLv2+
 Group: System Environment/Libraries
-Source: http://download.gnome.org/sources/atk/1.20/atk-%{version}.tar.bz2 
+Source: http://download.gnome.org/sources/atk/1.21/atk-%{version}.tar.bz2 
 URL: http://developer.gnome.org/projects/gap/
 BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n) 
 BuildRequires: glib2-devel >= %{glib2_version}