diff --git a/pkgs/tools/networking/dnsmasq/default.nix b/pkgs/tools/networking/dnsmasq/default.nix
index c88ce3522d52..0390c847acb8 100644
--- a/pkgs/tools/networking/dnsmasq/default.nix
+++ b/pkgs/tools/networking/dnsmasq/default.nix
@@ -1,11 +1,11 @@
 { stdenv, fetchurl }:
 
 stdenv.mkDerivation rec {
-  name = "dnsmasq-2.55";
+  name = "dnsmasq-2.57";
 
   src = fetchurl {
     url = "http://www.thekelleys.org.uk/dnsmasq/${name}.tar.gz";
-    sha256 = "0agrz7lvqdvh7ps173nr5yl00dblv2lpd0x9pm64f03zjzsyqqyg";
+    sha256 = "1bpq1wsc7cs1nqs7abhn96nxmdncdf7c58987f9kdmi246wcgq62";
   };
 
   makeFlags = "DESTDIR= BINDIR=$(out)/bin MANDIR=$(out)/man LOCALEDIR=$(out)/share/locale";