diff -up comm-beta/mozilla/configure.in.libpng-version comm-beta/mozilla/configure.in
--- comm-beta/mozilla/configure.in.libpng-version	2015-09-24 01:11:14.134538092 +0200
+++ comm-beta/mozilla/configure.in	2015-09-24 01:36:18.555218352 +0200
@@ -50,7 +50,7 @@ _SUBDIR_CONFIG_ARGS="$ac_configure_args"
 dnl Set the version number of the libs included with mozilla
 dnl ========================================================
 MOZJPEG=62
-MOZPNG=10617
+MOZPNG=10513
 NSPR_VERSION=4
 NSPR_MINVER=4.10.8
 NSS_VERSION=3