diff --git a/book/default.nix b/book/default.nix
index 5a2d40a..b3946e9 100644
--- a/book/default.nix
+++ b/book/default.nix
@@ -1,10 +1,6 @@
 { pkgs ? import <nixpkgs> { } }:
 
 let
-  nur = import (builtins.fetchTarball
-    "https://github.com/nix-community/NUR/archive/master.tar.gz") {
-      inherit pkgs;
-    };
   tex = pkgs.callPackage ../nix/texlive.nix { };
   version = "devel";
   words = import ../words;
@@ -16,7 +12,7 @@ in pkgs.stdenv.mkDerivation {
   buildInputs = with pkgs; [
     calibre
     mdbook
-    nur.repos.mic92.pandoc-bin
+    pandoc
     tex
     words
   ];