diff --git a/sdk_container/src/third_party/coreos-overlay/coreos-base/update_engine/update_engine-0.3.1.ebuild b/sdk_container/src/third_party/coreos-overlay/coreos-base/update_engine/update_engine-0.4.0.ebuild
similarity index 100%
rename from sdk_container/src/third_party/coreos-overlay/coreos-base/update_engine/update_engine-0.3.1.ebuild
rename to sdk_container/src/third_party/coreos-overlay/coreos-base/update_engine/update_engine-0.4.0.ebuild
diff --git a/sdk_container/src/third_party/coreos-overlay/coreos-base/update_engine/update_engine-9999.ebuild b/sdk_container/src/third_party/coreos-overlay/coreos-base/update_engine/update_engine-9999.ebuild
index 1a4bb9ec24..44b3e76e28 100644
--- a/sdk_container/src/third_party/coreos-overlay/coreos-base/update_engine/update_engine-9999.ebuild
+++ b/sdk_container/src/third_party/coreos-overlay/coreos-base/update_engine/update_engine-9999.ebuild
@@ -9,7 +9,7 @@ AUTOTOOLS_AUTORECONF=1
 if [[ "${PV}" == 9999 ]]; then
 	KEYWORDS="~amd64 ~arm ~arm64 ~x86"
 else
-	CROS_WORKON_COMMIT="131cc1a23b36f93dadb9556a226e4762d5d84edf" # v0.3.1
+	CROS_WORKON_COMMIT="31aaa29350679602293c361aeff65d5422054991" # v0.4.0
 	KEYWORDS="amd64 arm64"
 fi
 
diff --git a/sdk_container/src/third_party/coreos-overlay/coreos-devel/mantle/mantle-0.2.0.ebuild b/sdk_container/src/third_party/coreos-overlay/coreos-devel/mantle/mantle-0.2.1.ebuild
similarity index 100%
rename from sdk_container/src/third_party/coreos-overlay/coreos-devel/mantle/mantle-0.2.0.ebuild
rename to sdk_container/src/third_party/coreos-overlay/coreos-devel/mantle/mantle-0.2.1.ebuild
diff --git a/sdk_container/src/third_party/coreos-overlay/coreos-devel/mantle/mantle-9999.ebuild b/sdk_container/src/third_party/coreos-overlay/coreos-devel/mantle/mantle-9999.ebuild
index ca5a8bb127..489757c4eb 100644
--- a/sdk_container/src/third_party/coreos-overlay/coreos-devel/mantle/mantle-9999.ebuild
+++ b/sdk_container/src/third_party/coreos-overlay/coreos-devel/mantle/mantle-9999.ebuild
@@ -10,7 +10,7 @@ COREOS_GO_PACKAGE="github.com/coreos/mantle"
 if [[ "${PV}" == 9999 ]]; then
 	KEYWORDS="~amd64 ~arm64"
 else
-	CROS_WORKON_COMMIT="ead6c7fa80be4b7791fa4a4ab70cce359478cd7b" # v0.2.0
+	CROS_WORKON_COMMIT="68245fc568020ae42855f571b8e8d8bd258a74cc" # v0.2.1
 	KEYWORDS="amd64 arm64"
 fi