diff --git a/sdk_container/src/third_party/coreos-overlay/app-admin/sdnotify-proxy/sdnotify-proxy-9999.ebuild b/sdk_container/src/third_party/coreos-overlay/app-admin/sdnotify-proxy/sdnotify-proxy-9999.ebuild
index bcebaaea94..a97b6a0e1a 100644
--- a/sdk_container/src/third_party/coreos-overlay/app-admin/sdnotify-proxy/sdnotify-proxy-9999.ebuild
+++ b/sdk_container/src/third_party/coreos-overlay/app-admin/sdnotify-proxy/sdnotify-proxy-9999.ebuild
@@ -10,7 +10,7 @@ inherit coreos-go git-r3
 if [[ "${PV}" == 9999 ]]; then
 	KEYWORDS="~amd64 ~arm64"
 else
-	EGIT_COMMIT="0f8ef1aa86c59fc6d54eadaffb248feaccd1018b" # master
+	EGIT_COMMIT="0f8ef1aa86c59fc6d54eadaffb248feaccd1018b" # main
 	KEYWORDS="amd64 arm64"
 fi
 
diff --git a/sdk_container/src/third_party/coreos-overlay/coreos-base/coreos-cloudinit/coreos-cloudinit-9999.ebuild b/sdk_container/src/third_party/coreos-overlay/coreos-base/coreos-cloudinit/coreos-cloudinit-9999.ebuild
index 16d3c7eab8..5a37cd6380 100644
--- a/sdk_container/src/third_party/coreos-overlay/coreos-base/coreos-cloudinit/coreos-cloudinit-9999.ebuild
+++ b/sdk_container/src/third_party/coreos-overlay/coreos-base/coreos-cloudinit/coreos-cloudinit-9999.ebuild
@@ -10,7 +10,7 @@ inherit git-r3 systemd toolchain-funcs udev coreos-go
 if [[ "${PV}" == 9999 ]]; then
 	KEYWORDS="~amd64 ~arm64"
 else
-	EGIT_COMMIT="1c1d7f4ae6b933350d7fd36e882dda170123cccc" # flatcar-master
+	EGIT_COMMIT="1c1d7f4ae6b933350d7fd36e882dda170123cccc" # main
 	KEYWORDS="amd64 arm64"
 fi
 
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 78f25ae6d5..5ef48b487f 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
@@ -7,7 +7,7 @@ EGIT_REPO_URI="https://github.com/flatcar/seismograph.git"
 if [[ "${PV}" == 9999 ]]; then
 	KEYWORDS="~amd64 ~arm ~arm64 ~x86"
 else
-	EGIT_COMMIT="e32ac4d13ca44333dc77e5872dbf23f964b6f1e2" # flatcar-master
+	EGIT_COMMIT="e32ac4d13ca44333dc77e5872dbf23f964b6f1e2" # main
 	KEYWORDS="amd64 arm arm64 x86"
 fi