diff --git a/pkgs/servers/dns/bind/default.nix b/pkgs/servers/dns/bind/default.nix
index b609c6686a25..db8db908d1ec 100644
--- a/pkgs/servers/dns/bind/default.nix
+++ b/pkgs/servers/dns/bind/default.nix
@@ -1,6 +1,6 @@
 { stdenv, fetchurl, openssl, libtool, perl, libxml2 }:
 
-let version = "9.9.4-P2"; in
+let version = "9.9.5-W1"; in
 
 stdenv.mkDerivation rec {
 
@@ -8,7 +8,7 @@ stdenv.mkDerivation rec {
 
   src = fetchurl {
     url = "http://ftp.isc.org/isc/bind9/${version}/${name}.tar.gz";
-    sha256 = "128aqizcjbakrqrijjpy54qffqz1jafa94lhnqig7lr63r1wdwsh";
+    sha256 = "1b3ycb376b1j2fc0k6w16k8j9vgsfrzy3nlw1vxzzi41fgyqmcd3";
   };
 
   patchPhase = ''