diff --git a/sdk_container/src/third_party/portage-stable/changelog/security/2022-01-17-expat-2.4.3.md b/sdk_container/src/third_party/portage-stable/changelog/security/2022-01-17-expat-2.4.3.md
new file mode 100644
index 0000000000..fdf44b800b
--- /dev/null
+++ b/sdk_container/src/third_party/portage-stable/changelog/security/2022-01-17-expat-2.4.3.md
@@ -0,0 +1 @@
+- expat ([CVE-2021-45960](https://nvd.nist.gov/vuln/detail/CVE-2021-45960), [CVE-2021-46143](https://nvd.nist.gov/vuln/detail/CVE-2021-46143), [CVE-2022-22822](https://nvd.nist.gov/vuln/detail/CVE-2022-22822), [CVE-2022-22823](https://nvd.nist.gov/vuln/detail/CVE-2022-22823), [CVE-2022-22824](https://nvd.nist.gov/vuln/detail/CVE-2022-22824), [CVE-2022-22825](https://nvd.nist.gov/vuln/detail/CVE-2022-22825), [CVE-2022-22826](https://nvd.nist.gov/vuln/detail/CVE-2022-22826), [CVE-2022-22827](https://nvd.nist.gov/vuln/detail/CVE-2022-22827))
diff --git a/sdk_container/src/third_party/portage-stable/changelog/updates/2022-01-17-expat-2.4.3.md b/sdk_container/src/third_party/portage-stable/changelog/updates/2022-01-17-expat-2.4.3.md
new file mode 100644
index 0000000000..83d2791c45
--- /dev/null
+++ b/sdk_container/src/third_party/portage-stable/changelog/updates/2022-01-17-expat-2.4.3.md
@@ -0,0 +1 @@
+- expat ([2.4.3](https://github.com/libexpat/libexpat/blob/R_2_4_3/expat/Changes))