diff --git a/pkgs/development/libraries/libpng/default.nix b/pkgs/development/libraries/libpng/default.nix
index f1817601a76..e1617a04858 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-1.2.25";
+  name = "libpng-1.2.29";
   src = fetchurl {
-    url = mirror://sourceforge/libpng/libpng-1.2.25.tar.bz2;
-    sha256 = "1q3w2lfr7vkzvfxdgf54vj5s29xw8fg3hzb1lnfy9m9j1kdfm4if";
+    url = mirror://sourceforge/libpng/libpng-1.2.29.tar.bz2;
+    md5 = "f588cb4ee39e3a333604096f937ea157";
   };
   propagatedBuildInputs = [zlib];
   inherit zlib;