diff --git a/sdk_container/src/third_party/portage-stable/changelog/security/2022-02-22-expat-2.4.6.md b/sdk_container/src/third_party/portage-stable/changelog/security/2022-02-22-expat-2.4.6.md
new file mode 100644
index 0000000000..fe7a9247a7
--- /dev/null
+++ b/sdk_container/src/third_party/portage-stable/changelog/security/2022-02-22-expat-2.4.6.md
@@ -0,0 +1 @@
+- expat ([CVE-2022-25235](https://nvd.nist.gov/vuln/detail/CVE-2022-25235), [CVE-2022-25236](https://nvd.nist.gov/vuln/detail/CVE-2022-25236), [CVE-2022-25313](https://nvd.nist.gov/vuln/detail/CVE-2022-25313), [CVE-2022-25314](https://nvd.nist.gov/vuln/detail/CVE-2022-25314), [CVE-2022-25315](https://nvd.nist.gov/vuln/detail/CVE-2022-25315))
diff --git a/sdk_container/src/third_party/portage-stable/changelog/updates/2022-02-22-expat-2.4.6.md b/sdk_container/src/third_party/portage-stable/changelog/updates/2022-02-22-expat-2.4.6.md
new file mode 100644
index 0000000000..d51700b029
--- /dev/null
+++ b/sdk_container/src/third_party/portage-stable/changelog/updates/2022-02-22-expat-2.4.6.md
@@ -0,0 +1 @@
+- expat ([2.4.6](https://github.com/libexpat/libexpat/blob/R_2_4_6/expat/Changes))