diff --git a/pkgs/all-packages.nix b/pkgs/all-packages.nix
index 3e29833..1001a98 100644
--- a/pkgs/all-packages.nix
+++ b/pkgs/all-packages.nix
@@ -14,7 +14,7 @@ self: super: pkgs: with pkgs; {
 
   octopus = callPackage ./octopus { };
 
-  #openfoam = callPackage ./openfoam.nix { };
+  openfoam = callPackage ./openfoam.nix { };
 
   openslide = callPackage ./openslide { };
   openslide-python = callPackage ./openslide/python.nix { };
diff --git a/pkgs/openfoam.nix b/pkgs/openfoam.nix
index e80db22..a785fe1 100644
--- a/pkgs/openfoam.nix
+++ b/pkgs/openfoam.nix
@@ -8,7 +8,7 @@ stdenv.mkDerivation rec {
 
   src = fetchurl {
      url = "https://github.com/OpenFOAM/OpenFOAM-4.x/archive/version-${version}.tar.gz";
-     sha256 = "0mslymq1szprzlp18j92zl30zfz9bj9r4psxa6ys99qw0ff85vx8";
+     sha256 = "0jfzc561ra1wzg8wbp5ipp1r5r1qg84krhmcvi8injqkl4svxbkk";
   };
 
   # a lot of assumptions about being under a directory named OpenFOAM-${version}