diff --git a/.gitignore b/.gitignore
index 402a449..c7482a2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 /gtk-0.11.2.tar.gz
 /gtk-0.12.0.tar.gz
+/gtk-0.12.1.tar.gz
diff --git a/ghc-gtk.spec b/ghc-gtk.spec
index 6f94cd5..373475a 100644
--- a/ghc-gtk.spec
+++ b/ghc-gtk.spec
@@ -4,14 +4,14 @@
 
 %global common_description A %{pkg_name} library for Haskell.
 
-%global ghc_pkg_c_deps gtk2-devel
+%global ghc_pkg_c_deps gtk2-devel%{?_isa}
 
 # obsolete old gtk2hs packages
 %global ghc_pkg_obsoletes ghc-gtkglext-devel < 0.11, ghc-soegtk-devel < 0.11, ghc-vte-devel < 0.11
 
 Name:           ghc-%{pkg_name}
-Version:        0.12.0
-Release:        5%{?dist}
+Version:        0.12.1
+Release:        1%{?dist}
 Summary:        %{common_summary}
 
 Group:          System Environment/Libraries
@@ -50,6 +50,10 @@ echo %doc demo >> %{name}-devel.files
 
 
 %changelog
+* Tue Sep 20 2011 Jens Petersen <petersen@redhat.com> - 0.12.1-1
+- update to 0.12.1
+- add _isa suffix to gtk2-devel depends (see #723558)
+
 * Tue Jun 21 2011 Jens Petersen <petersen@redhat.com> - 0.12.0-5
 - BR ghc-Cabal-devel instead of ghc-prof and use ghc_arches (cabal2spec-0.23.2)
 
diff --git a/sources b/sources
index fbd2388..8a2fb57 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-17a9d34085b703510d8feb2608b5d776  gtk-0.12.0.tar.gz
+57b9432ea8d4d7ef3b96f0c19f805ed8  gtk-0.12.1.tar.gz