diff --git a/mingw-w64-gtk3/0017-ref-parent-node-in-relation.all.patch b/mingw-w64-gtk3/0017-ref-parent-node-in-relation.all.patch
deleted file mode 100644
index 43512d5a18..0000000000
--- a/mingw-w64-gtk3/0017-ref-parent-node-in-relation.all.patch
+++ /dev/null
@@ -1,10 +0,0 @@
---- gtk+-3.11.8/gtk/a11y/gtktreeviewaccessible.c.orig	2014-02-26 21:04:50.000000000 +0000
-+++ gtk+-3.11.8/gtk/a11y/gtktreeviewaccessible.c	2014-03-14 19:24:27.490847100 +0000
-@@ -446,6 +446,7 @@
-       relation = atk_relation_new (&parent_node, 1, ATK_RELATION_NODE_CHILD_OF);
-       atk_relation_set_add (relation_set, relation);
-       atk_object_add_relationship (parent_node, ATK_RELATION_NODE_PARENT_OF, ATK_OBJECT (cell));
-+      g_object_ref (parent_node);
-       g_object_unref (relation);
-       g_object_unref (relation_set);
-     }
diff --git a/mingw-w64-gtk3/PKGBUILD b/mingw-w64-gtk3/PKGBUILD
index 0761884ba0..c1522207fa 100644
--- a/mingw-w64-gtk3/PKGBUILD
+++ b/mingw-w64-gtk3/PKGBUILD
@@ -3,7 +3,7 @@
 _realname=gtk3
 _mingw_suff=mingw-w64-${CARCH}
 pkgname="${_mingw_suff}-${_realname}"
-pkgver=3.11.9
+pkgver=3.12.0
 pkgrel=1
 pkgdesc="GObject-based multi-platform GUI toolkit (v3) (mingw-w64)"
 arch=('any')
@@ -30,17 +30,15 @@ source=("http://ftp.gnome.org/pub/gnome/sources/gtk+/${pkgver%.*}/gtk+-${pkgver}
 		0011-gir-for-gdkwin32.mingw.patch
 		0012-embed-manifest.all.patch
 		0014-fix-gnu-print-format.patch
-		0015-Suppress-a-warning-from-SetWindowLongPtr.all.patch
-		0017-ref-parent-node-in-relation.all.patch)
-md5sums=('f9ad3e78a2d33a30514be4d8dfedd300'
+		0015-Suppress-a-warning-from-SetWindowLongPtr.all.patch)
+md5sums=('4e493fb68cded7420a7d8bcebdf13811'
          '53ddd35c66dafd59567c4babf79d2821'
          'e8bd83e4eb9877d009ad57458cf5a6b0'
          '9e0296da2986be7697cf343563b85d1f'
          '167f8218771d5304477a7649b0b91d2f'
          '47aa5b0d120102d526d2f781338f93b1'
          '3052a2c4dac22042780471b14463ea89'
-         '36ad8b20dd38e586e92ddb39c59eb923'
-         '6cd764cc55641232b95ac1558010dc54')
+         '36ad8b20dd38e586e92ddb39c59eb923')
 
 prepare() {
 	cd "${srcdir}/gtk+-${pkgver}"
@@ -51,7 +49,6 @@ prepare() {
 	patch -Np1 -i "${srcdir}/0012-embed-manifest.all.patch"
 	patch -Np1 -i "${srcdir}/0014-fix-gnu-print-format.patch"
 	patch -Np1 -i "${srcdir}/0015-Suppress-a-warning-from-SetWindowLongPtr.all.patch"
-	patch -Np1 -i "${srcdir}/0017-ref-parent-node-in-relation.all.patch"
 	autoreconf -i
 }