diff --git a/ghc-7.4.1-src.tar.bz2 b/ghc-7.4.1-src.tar.bz2
deleted file mode 100644
index 22ca771..0000000
--- a/ghc-7.4.1-src.tar.bz2
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:721c09a49e519b7459b67b451b5103252ba3833906a7a24c3a3679ff94669a79
-size 25272609
diff --git a/ghc-7.4.2-src.tar.bz2 b/ghc-7.4.2-src.tar.bz2
new file mode 100644
index 0000000..8439acc
--- /dev/null
+++ b/ghc-7.4.2-src.tar.bz2
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f2ee1289a33cc70539287129841acc7eaf16112bb60c59b5a6ee91887bfd836d
+size 25836446
diff --git a/ghc.changes b/ghc.changes
index dc195c9..bab0c85 100644
--- a/ghc.changes
+++ b/ghc.changes
@@ -1,3 +1,15 @@
+-------------------------------------------------------------------
+Thu Nov  8 22:24:25 UTC 2012 - peter.trommler@ohm-hochschule.de
+
+- Update to version 7.4.2 from upstream
+* Required by Haskell Platform 2012.4.0.0
+* Fixes for ghc and ghci 
+
+-------------------------------------------------------------------
+Thu Nov  8 19:58:08 UTC 2012 - peter.trommler@ohm-hochschule.de
+
+- add ExclusiveArch tag 
+
 -------------------------------------------------------------------
 Tue Nov  6 14:41:06 UTC 2012 - peter.trommler@ohm-hochschule.de
 
diff --git a/ghc.spec b/ghc.spec
index 6af9cde..5a496ff 100644
--- a/ghc.spec
+++ b/ghc.spec
@@ -26,12 +26,13 @@
 #%%global debug_package %{nil}
 
 Name:           ghc
-Version:        7.4.1
+Version:        7.4.2
 Release:        0
 Url:            http://haskell.org/ghc/dist/%{version}/%{name}-%{version}-src.tar.bz2
 Summary:        The Glorious Glasgow Haskell Compiler
 License:        BSD-3-Clause
 Group:          Development/Languages/Other
+ExclusiveArch:  %{ix86} x86_64
 
 # Remove after initial bootstrap
 %if %{defined without_binary_ghc}
@@ -100,7 +101,7 @@ Requires:       ghc-libraries = %{version}-%{release}
 Source:         http://haskell.org/ghc/dist/%{version}/%{name}-%{version}-src.tar.bz2
 # remove after initial bootstrap
 # Binary distributions for initial bootstrap
-%global bootstrap_version %{version}
+%global bootstrap_version 7.4.1
 Source1:        %{name}-%{bootstrap_version}-%{_arch}-unknown-linux.tar.bz2
 # NoSource:       1
 # end bootstrap
@@ -168,7 +169,7 @@ To install all of GHC install package ghc.
 %if %{defined ghclibdir}
 %ghc_lib_subpackage Cabal 1.14.0
 %ghc_lib_subpackage array 0.4.0.0
-%ghc_lib_subpackage -c gmp-devel,libffi-devel base 4.5.0.0
+%ghc_lib_subpackage -c gmp-devel,libffi-devel base 4.5.1.0
 %ghc_lib_subpackage binary 0.5.1.0
 %ghc_lib_subpackage bytestring 0.9.2.1
 %ghc_lib_subpackage containers 0.4.2.1
@@ -189,7 +190,7 @@ To install all of GHC install package ghc.
 %ghc_lib_subpackage process 1.1.0.1
 %ghc_lib_subpackage template-haskell 2.7.0.0
 %ghc_lib_subpackage time 1.4
-%ghc_lib_subpackage unix 2.5.1.0
+%ghc_lib_subpackage unix 2.5.1.1
 %endif
 
 %global version %{ghc_version_override}