diff --git a/Formula/libpng.rb b/Formula/libpng.rb
index e4ace557d3..fc40d8c891 100644
--- a/Formula/libpng.rb
+++ b/Formula/libpng.rb
@@ -2,14 +2,10 @@ require "formula"
 
 class Libpng < Formula
   homepage "http://www.libpng.org/pub/png/libpng.html"
-  url "https://downloads.sf.net/project/libpng/libpng16/1.6.14/libpng-1.6.14.tar.xz"
-  sha1 "9cc30ac84214fda2177a02da275359ffd5b068d9"
+  url "https://downloads.sf.net/project/libpng/libpng16/1.6.15/libpng-1.6.15.tar.xz"
+  sha1 "bddeac8ca97fbcf54d6d32c6eefed5d94b49df88"
 
   bottle do
-    cellar :any
-    sha1 "08a5ef7f2c249c5da21de2d5405dab650d454f46" => :yosemite
-    sha1 "bb4d97b044dff54ff2dfcba06e28d77951ca0306" => :mavericks
-    sha1 "adb52fcc77e699a20e715c6eeaf5653fd27b9aca" => :mountain_lion
   end
 
   keg_only :provided_pre_mountain_lion