diff -Nru graphicsmagick-1.3.20/debian/changelog graphicsmagick-1.3.20/debian/changelog
--- graphicsmagick-1.3.20/debian/changelog	2014-09-27 14:58:13.000000000 +0000
+++ graphicsmagick-1.3.20/debian/changelog	2015-01-28 19:10:46.000000000 +0000
@@ -1,3 +1,10 @@
+graphicsmagick (1.3.20-4) experimental; urgency=low
+
+  * Test build with QuantumDepth 16 (closes: #557879).
+  * Update Standards-Version to 3.9.6 .
+
+ -- Laszlo Boszormenyi (GCS) <gcs@debian.org>  Wed, 28 Jan 2015 17:56:41 +0000
+
 graphicsmagick (1.3.20-3) unstable; urgency=medium
 
   * Use upstream fix for AnnotateImage() return value (closes: #759956).
diff -Nru graphicsmagick-1.3.20/debian/control graphicsmagick-1.3.20/debian/control
--- graphicsmagick-1.3.20/debian/control	2014-08-28 21:22:20.000000000 +0000
+++ graphicsmagick-1.3.20/debian/control	2015-01-28 18:27:42.000000000 +0000
@@ -3,7 +3,7 @@
 Priority: optional
 Maintainer: Laszlo Boszormenyi (GCS) <gcs@debian.org>
 Build-Depends: debhelper (>= 9), libjpeg-dev, libjasper-dev, liblcms2-dev, libwmf-dev (>= 0.2.8.4), libx11-dev, libsm-dev, libice-dev, libxext-dev, x11proto-core-dev, libxml2-dev, libfreetype6-dev, libexif-dev, libbz2-dev, libtiff-dev, libjbig-dev, zlib1g-dev | libz-dev, libpng-dev, perl (>= 5.20), ghostscript, autotools-dev, transfig, sharutils, libltdl-dev, dh-autoreconf
-Standards-Version: 3.9.5
+Standards-Version: 3.9.6
 Homepage: http://www.graphicsmagick.org/
 
 Package: graphicsmagick
diff -Nru graphicsmagick-1.3.20/debian/copyright graphicsmagick-1.3.20/debian/copyright
--- graphicsmagick-1.3.20/debian/copyright	2013-12-11 13:01:23.000000000 +0000
+++ graphicsmagick-1.3.20/debian/copyright	2015-01-28 18:13:11.000000000 +0000
@@ -1,5 +1,7 @@
 This package was debianized by Sven Wilhelm <wilhelm@icecrash.com> on
 Mon,  7 Jun 2004 02:23:06 +0200.
+It was taken over in December of 2013 by Laszlo Boszormenyi (GCS)
+<gcs@debian.org> .
 
 It was downloaded from http://sourceforge.net/projects/graphicsmagick/files/
 
diff -Nru graphicsmagick-1.3.20/debian/rules graphicsmagick-1.3.20/debian/rules
--- graphicsmagick-1.3.20/debian/rules	2014-08-24 03:17:53.000000000 +0000
+++ graphicsmagick-1.3.20/debian/rules	2015-01-28 18:03:43.000000000 +0000
@@ -77,7 +77,8 @@
 		--without-modules \
 		--without-frozenpaths \
 		--with-perl \
-		--with-perl-options="INSTALLDIRS=vendor"
+		--with-perl-options="INSTALLDIRS=vendor" \
+		--with-quantum-depth=16
 
 	touch configure-stamp