diff --git a/sdk_container/src/third_party/coreos-overlay/changelog/updates/2022-01-01-timezone-data-2021a-update.md b/sdk_container/src/third_party/coreos-overlay/changelog/updates/2022-01-01-timezone-data-2021a-update.md
new file mode 100644
index 0000000000..1876cf8871
--- /dev/null
+++ b/sdk_container/src/third_party/coreos-overlay/changelog/updates/2022-01-01-timezone-data-2021a-update.md
@@ -0,0 +1 @@
+- timezone-data ([2021a](https://mm.icann.org/pipermail/tz-announce/2021-January/000065.html))