diff --git a/sdk_container/src/third_party/coreos-overlay/changelog/updates/2022-01-12-mantle.md b/sdk_container/src/third_party/coreos-overlay/changelog/updates/2022-01-12-mantle.md
new file mode 100644
index 0000000000..57e6311871
--- /dev/null
+++ b/sdk_container/src/third_party/coreos-overlay/changelog/updates/2022-01-12-mantle.md
@@ -0,0 +1 @@
+- mantle ([0.18.0](https://github.com/flatcar-linux/mantle/releases/tag/v0.18.0))