diff --git a/Formula/libpng.rb b/Formula/libpng.rb
index aebf6d8dfe..d63b35d81d 100644
--- a/Formula/libpng.rb
+++ b/Formula/libpng.rb
@@ -1,9 +1,9 @@
 class Libpng < Formula
   desc "Library for manipulating PNG images"
   homepage "http://www.libpng.org/pub/png/libpng.html"
-  url "https://downloads.sourceforge.net/project/libpng/libpng16/1.6.17/libpng-1.6.17.tar.xz"
-  mirror "ftp://ftp.simplesystems.org/pub/libpng/png/src/libpng16/libpng-1.6.17.tar.xz"
-  sha256 "98507b55fbe5cd43c51981f2924e4671fd81fe35d52dc53357e20f2c77fa5dfd"
+  # Sourceforge tarball is not up yet; review this later
+  url "ftp://ftp.simplesystems.org/pub/libpng/png/src/libpng16/libpng-1.6.18.tar.xz"
+  sha256 "2e10c13b7949883ac961db6177c516d778184432d440317e9f0391305c360963"
 
   bottle do
     cellar :any