diff --git a/haskell/default.nix b/haskell/default.nix
index 3beb45d..31f89c5 100644
--- a/haskell/default.nix
+++ b/haskell/default.nix
@@ -5,7 +5,7 @@
 with nixpkgs;
 
 let
-  version = "2017-03-03";
+  version = "2017-04-09";
 in
 
 # https://github.com/NixOS/nixpkgs/blob/master/doc/languages-frameworks/haskell.md
@@ -24,7 +24,7 @@ haskell.lib.buildStackProject {
   #  sha256 = "0wnwhkjv7vq6m4xkiahf4m18zg3dr51zydzjnmy1d7hdqawh55pn";
   #};
   #buildInputs = [ stack himes-src];
-  buildInputs = [ stack ];
+  buildInputs = [ stack nix zlib ];
   inherit ghc;
 }
 
diff --git a/release.nix b/release.nix
index cf59ccd..1ea2c7f 100644
--- a/release.nix
+++ b/release.nix
@@ -33,6 +33,8 @@ with (import <nixpkgs/pkgs/top-level/release-lib.nix> { inherit supportedSystems
   r6d.geos = import ./geos.nix;
   #r6d.idea14-ultimate = import ./idea/default.nix { inherit nixpkgs;};
   r6d.osm2pgsql = import ./osm2pgsql/default.nix;
+
+  himes.himes = import haskell/default.nix;
 } /*  // {
   # Simply assign a derivation to an attribute to have it built.
   hello_world_1 = pkgs_x86_64_linux.hello;