diff --git a/pkgs/tools/security/mktemp/default.nix b/pkgs/tools/security/mktemp/default.nix
index 537337a7931..001fa4f0953 100644
--- a/pkgs/tools/security/mktemp/default.nix
+++ b/pkgs/tools/security/mktemp/default.nix
@@ -1,11 +1,11 @@
 {stdenv, fetchurl}:
   
 stdenv.mkDerivation {
-  name = "mktemp-1.5";
+  name = "mktemp-1.6";
   
   src = fetchurl {
-    url = ftp://ftp.mktemp.org/pub/mktemp/mktemp-1.5.tar.gz;
-    md5 = "9a35c59502a228c6ce2be025fc6e3ff2";
+    url = ftp://ftp.mktemp.org/pub/mktemp/mktemp-1.6.tar.gz;
+    sha256 = "1nfj89b0dv1c2fyqi1pg54fyzs3462cbp7jv7lskqsxvqy4mh9x1";
   };
   
 }