diff --git a/rf.nix b/rf.nix
index 4eee8ec..28f56cd 100644
--- a/rf.nix
+++ b/rf.nix
@@ -1,10 +1,12 @@
 let
-   rev = "d7c0d9a7f83b7f80e08888c040ea8a2ab7ca5f71";
+   rev = "0d576d7eb875b83ada78dca788981cccf2e4d883";
    np = builtins.fetchTarball {
      url = "https://github.com/nixos/nixpkgs/archive/${rev}.tar.gz";
-     sha256 = "1i5a0si7m80w1a987crm9xmbin35jpmdcsk3113xxp9xcw0v23rn";
+     sha256 = "178j5kp89is5a6vkbj83g0yr4ykgibp1lwhybvgp7sfw9rk9fy5d";
    };
    config = {
+      allowBroken = true;
+      overlays = [];
       packageOverrides = pkgs: rec {
          haskellPackages = pkgs.haskellPackages.override {
             overrides = haskellPackagesNew: haskellPackagesOld: rec {
diff --git a/shell.nix b/shell.nix
index 36ebee5..825f5fe 100755
--- a/shell.nix
+++ b/shell.nix
@@ -1,14 +1,14 @@
 let
    stuff = import ./rf.nix;
 in 
-  stuff.rf.env.overrideAttrs (drv: {
-    buildInputs = drv.buildInputs ++ [
-       stuff.pkgs.vim
-       stuff.pkgs.elinks
-       stuff.pkgs.nix
-       stuff.pkgs.cabal2nix
-       stuff.pkgs.imagemagick
-       stuff.pkgs.inconsolata  
-       stuff.pkgs.git
-    ];
+   stuff.rf.env.overrideAttrs (drv: {
+      buildInputs = drv.buildInputs ++ [
+         stuff.pkgs.vim
+         stuff.pkgs.elinks
+         stuff.pkgs.nix
+         stuff.pkgs.cabal2nix
+         stuff.pkgs.imagemagick
+         stuff.pkgs.inconsolata  
+         stuff.pkgs.git
+      ];
   })