diff --git a/pkgs/development/compilers/ghc/head.nix b/pkgs/development/compilers/ghc/head.nix
index f4f8be27367..7f5ec0985b9 100644
--- a/pkgs/development/compilers/ghc/head.nix
+++ b/pkgs/development/compilers/ghc/head.nix
@@ -1,12 +1,12 @@
 { stdenv, fetchurl, ghc, perl, gmp, ncurses, happy, alex }:
 
 stdenv.mkDerivation rec {
-  version = "7.7.20131202";
+  version = "7.9.20140313";
   name = "ghc-${version}";
 
   src = fetchurl {
     url = "http://cryp.to/${name}.tar.xz";
-    sha256 = "1gnp5c3x7dbaz7s2yvkw2fmvqh5by2gpp0zlcyj8p2gv13gxi2cb";
+    sha256 = "03i9ajgzlp2y0qq7qnmyji6vdcgx2xnsyrc2zbqbziinf86igwhi";
   };
 
   buildInputs = [ ghc perl gmp ncurses happy alex ];