diff --git a/pkgs/os-specific/linux/cifs-utils/default.nix b/pkgs/os-specific/linux/cifs-utils/default.nix
index ce609c5be476..0183a606b2e1 100644
--- a/pkgs/os-specific/linux/cifs-utils/default.nix
+++ b/pkgs/os-specific/linux/cifs-utils/default.nix
@@ -1,11 +1,11 @@
 { stdenv, fetchurl }:
 
 stdenv.mkDerivation rec {
-  name = "cifs-utils-6.3";
+  name = "cifs-utils-6.4";
 
   src = fetchurl {
     url = "ftp://ftp.samba.org/pub/linux-cifs/cifs-utils/${name}.tar.bz2";
-    sha256 = "0nrpd3ibzfhdxgq1pw0jhzx163z5jvq4qcjxl35qlqj74lm3pxzz";
+    sha256 = "1qz6d2xg4z1if0hy7qwyzgcr59l0alkhci6gxgjdldglda967z1q";
   };
 
   makeFlags = "root_sbindir=$(out)/sbin";