diff --git a/pkgs/misc/nix/default.nix b/pkgs/misc/nix/default.nix
index de54567da21..ea1ee5267be 100644
--- a/pkgs/misc/nix/default.nix
+++ b/pkgs/misc/nix/default.nix
@@ -5,12 +5,12 @@ assert aterm != null && bdb != null;
 # assert aterm.version >= 2.0
 
 derivation {
-  name = "nix-0.5pre792";
+  name = "nix-0.5pre807";
   system = stdenv.system;
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://catamaran.labs.cs.uu.nl/dist/nix/nix-0.5pre792/nix-0.5pre792.tar.bz2;
-    md5 = "8f8747478eac5b2df5791400af506cf0";
+    url = http://catamaran.labs.cs.uu.nl/dist/nix/nix-0.5pre807/nix-0.5pre807.tar.bz2;
+    md5 = "fa64bfc39de3e8903954328e4a90d530";
   };
   inherit stdenv aterm bdb;
 }