diff --git a/sdk_container/src/third_party/coreos-overlay/sys-apps/seismograph/Manifest b/sdk_container/src/third_party/coreos-overlay/sys-apps/seismograph/Manifest
new file mode 100644
index 0000000000..93ad712a4e
--- /dev/null
+++ b/sdk_container/src/third_party/coreos-overlay/sys-apps/seismograph/Manifest
@@ -0,0 +1 @@
+DIST seismograph-231f8b31c576133f75151d34cb90890bfaf15ebe.tar.gz 87054 BLAKE2B 921741f471abe0af3097f2d8ae25dfc9f5d09215861a43cdf4dbb8380c1ba3a4520ba233943afd392e84e0b203feb3189aa1ee000071176a9963eee7cb00c94f SHA512 efc59ddf8351567c08b19a6b4b6f6984f49e05fc8d2b494e37cee67f9692680497271b5aa8ab265012d368dae0b8b69959f200d648aa6b296aa70ab689bb62e4
diff --git a/sdk_container/src/third_party/coreos-overlay/sys-apps/seismograph/metadata.xml b/sdk_container/src/third_party/coreos-overlay/sys-apps/seismograph/metadata.xml
index 097975e3ad..50516d844c 100644
--- a/sdk_container/src/third_party/coreos-overlay/sys-apps/seismograph/metadata.xml
+++ b/sdk_container/src/third_party/coreos-overlay/sys-apps/seismograph/metadata.xml
@@ -1,4 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
 <pkgmetadata>
+	<upstream>
+		<remote-id type="github">flatcar/seismograph</remote-id>
+	</upstream>
 </pkgmetadata>
diff --git a/sdk_container/src/third_party/coreos-overlay/sys-apps/seismograph/seismograph-9999.ebuild b/sdk_container/src/third_party/coreos-overlay/sys-apps/seismograph/seismograph-9999.ebuild
index e049848221..e752a4e12f 100644
--- a/sdk_container/src/third_party/coreos-overlay/sys-apps/seismograph/seismograph-9999.ebuild
+++ b/sdk_container/src/third_party/coreos-overlay/sys-apps/seismograph/seismograph-9999.ebuild
@@ -1,28 +1,36 @@
 # Copyright (c) 2015 The CoreOS OS Authors. All rights reserved.
 # Distributed under the terms of the GNU General Public License v2
 
-EAPI=7
-EGIT_REPO_URI="https://github.com/flatcar/seismograph.git"
+EAPI=8
 
-if [[ "${PV}" == 9999 ]]; then
-	KEYWORDS="~amd64 ~arm ~arm64 ~x86"
+inherit autotools
+
+DESCRIPTION="Flatcar Disk Utilities (e.g. cgpt)"
+HOMEPAGE="https://github.com/flatcar/seismograph"
+
+if [[ ${PV} == 9999 ]]; then
+	EGIT_REPO_URI="https://github.com/flatcar/seismograph.git"
+	inherit git-r3
 else
-	EGIT_COMMIT="231f8b31c576133f75151d34cb90890bfaf15ebe" # main
+	EGIT_VERSION="231f8b31c576133f75151d34cb90890bfaf15ebe" # main
+	SRC_URI="https://github.com/flatcar/seismograph/archive/${EGIT_VERSION}.tar.gz -> ${PN}-${EGIT_VERSION}.tar.gz"
+	S="${WORKDIR}/${PN}-${EGIT_VERSION}"
 	KEYWORDS="amd64 arm arm64 x86"
 fi
 
-inherit autotools git-r3
-
-DESCRIPTION="CoreOS Disk Utilities (e.g. cgpt)"
 LICENSE="BSD"
 SLOT="0"
-IUSE=""
 
 RDEPEND="
 	sys-apps/util-linux
 	sys-fs/e2fsprogs
 "
-DEPEND="${RDEPEND}"
+DEPEND="
+	${RDEPEND}
+"
+BDEPEND="
+	virtual/pkgconfig
+"
 
 src_prepare() {
 	default