diff --git a/pkgs/development/libraries/libpng/default.nix b/pkgs/development/libraries/libpng/default.nix
index 62c51a2c5a7b..222185d99e62 100644
--- a/pkgs/development/libraries/libpng/default.nix
+++ b/pkgs/development/libraries/libpng/default.nix
@@ -3,10 +3,10 @@
 assert zlib != null;
 
 stdenv.mkDerivation {
-  name = "libpng-1.2.16";
+  name = "libpng-1.2.18";
   src = fetchurl {
-    url = http://heanet.dl.sourceforge.net/sourceforge/libpng/libpng-1.2.16.tar.bz2;
-    md5 = "7a1ca4f49bcffdec60d50f48460642bd";
+    url = http://dfn.dl.sourceforge.net/sourceforge/libpng/libpng-1.2.18.tar.bz2;
+    sha256 = "0qhcy8r0r8280wahs91xi4p79gm2cb021x9bcww1r5bywvwn5kkg";
   };
   propagatedBuildInputs = [zlib];
   inherit zlib;