diff --git a/sdk_container/src/third_party/coreos-overlay/dev-lang/go/go-1.4.3.ebuild b/sdk_container/src/third_party/coreos-overlay/dev-lang/go/go-1.4.3.ebuild
new file mode 100644
index 0000000000..cf5950be65
--- /dev/null
+++ b/sdk_container/src/third_party/coreos-overlay/dev-lang/go/go-1.4.3.ebuild
@@ -0,0 +1,121 @@
+# Copyright 1999-2015 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Header: /var/cvsroot/gentoo-x86/dev-lang/go/go-1.4.2.ebuild,v 1.3 2015/04/08 12:57:46 zlogene Exp $
+
+EAPI=5
+
+export CTARGET=${CTARGET:-${CHOST}}
+
+inherit eutils toolchain-funcs
+
+if [[ ${PV} = 9999 ]]; then
+	EGIT_REPO_URI="git://github.com/golang/go.git"
+	inherit git-r3
+else
+	SRC_URI="https://storage.googleapis.com/golang/go${PV}.src.tar.gz"
+	# Upstream only supports go on amd64, arm and x86 architectures.
+	KEYWORDS="-* amd64 ~arm x86 ~amd64-fbsd ~x86-fbsd ~x64-macos ~x86-macos"
+fi
+
+DESCRIPTION="A concurrent garbage collected and typesafe programming language"
+HOMEPAGE="http://www.golang.org"
+
+LICENSE="BSD"
+SLOT="0"
+IUSE=""
+
+DEPEND=""
+RDEPEND=""
+
+# The tools in /usr/lib/go should not cause the multilib-strict check to fail.
+QA_MULTILIB_PATHS="usr/lib/go/pkg/tool/.*/.*"
+
+# The go language uses *.a files which are _NOT_ libraries and should not be
+# stripped.
+STRIP_MASK="/usr/lib/go/pkg/linux*/*.a /usr/lib/go/pkg/freebsd*/*.a /usr/lib/go/pkg/darwin*/*.a"
+
+if [[ ${PV} != 9999 ]]; then
+	S="${WORKDIR}"/go
+fi
+
+src_prepare()
+{
+	if [[ ${PV} != 9999 ]]; then
+		sed -i -e 's#"-Werror",##g' src/cmd/dist/build.c ||
+			die "sed failed"
+	fi
+	epatch_user
+}
+
+src_compile()
+{
+	export GOROOT_FINAL="${EPREFIX}"/usr/lib/go
+	export GOROOT="$(pwd)"
+	export GOBIN="${GOROOT}/bin"
+	if [[ $CTARGET = armv5* ]]
+	then
+		export GOARM=5
+	fi
+	tc-export CC
+
+	cd src
+	./make.bash || die "build failed"
+}
+
+src_test()
+{
+	cd src
+	PATH="${GOBIN}:${PATH}" \
+		./run.bash --no-rebuild --banner || die "tests failed"
+}
+
+src_install()
+{
+	dobin bin/*
+	dodoc AUTHORS CONTRIBUTORS PATENTS README
+
+	dodir /usr/lib/go
+	insinto /usr/lib/go
+
+	# There is a known issue which requires the source tree to be installed [1].
+	# Once this is fixed, we can consider using the doc use flag to control
+	# installing the doc and src directories.
+	# [1] https://golang.org/issue/2775
+	doins -r doc include lib pkg src
+	fperms -R +x /usr/lib/go/pkg/tool
+}
+
+pkg_preinst()
+{
+	has_version '<dev-lang/go-1.4' &&
+		export had_support_files=true ||
+		export had_support_files=false
+}
+
+pkg_postinst()
+{
+	# If the go tool sees a package file timestamped older than a dependancy it
+	# will rebuild that file.  So, in order to stop go from rebuilding lots of
+	# packages for every build we need to fix the timestamps.  The compiler and
+	# linker are also checked - so we need to fix them too.
+	ebegin "fixing timestamps to avoid unnecessary rebuilds"
+	tref="usr/lib/go/pkg/*/runtime.a"
+	find "${EROOT}"usr/lib/go -type f \
+		-exec touch -r "${EROOT}"${tref} {} \;
+	eend $?
+
+	if [[ ${PV} != 9999 && -n ${REPLACING_VERSIONS} &&
+		${REPLACING_VERSIONS} != ${PV} ]]; then
+		elog "Release notes are located at http://golang.org/doc/go1.4"
+	fi
+
+	if $had_support_files; then
+		ewarn
+		ewarn "All editor support, IDE support, shell completion"
+		ewarn "support, etc has been removed from the go package"
+		ewarn "upstream."
+		ewarn "For more information on which support is available, see"
+		ewarn "the following URL:"
+		ewarn "https://github.com/golang/go/wiki/IDEsAndTextEditorPlugins"
+	fi
+}
diff --git a/sdk_container/src/third_party/coreos-overlay/profiles/coreos/base/package.accept_keywords b/sdk_container/src/third_party/coreos-overlay/profiles/coreos/base/package.accept_keywords
index a3c644eea1..78841556cb 100644
--- a/sdk_container/src/third_party/coreos-overlay/profiles/coreos/base/package.accept_keywords
+++ b/sdk_container/src/third_party/coreos-overlay/profiles/coreos/base/package.accept_keywords
@@ -124,3 +124,8 @@ dev-util/checkbashisms
 =sys-devel/gcc-4.9.3
 =cross-aarch64-cros-linux-gnu/gcc-4.9.3 ~arm64
 =cross-x86_64-cros-linux-gnu/gcc-4.9.3  ~amd64
+
+# go 1.4.3 includes a number of security fixes.
+# https://github.com/golang/go/issues?q=milestone%3AGo1.4.3
+=dev-lang/go-1.4.3 ~amd64
+