diff --git a/sdk_container/src/third_party/coreos-overlay/README.md b/sdk_container/src/third_party/coreos-overlay/README.md
index 91158fd7ce..8103b36128 100644
--- a/sdk_container/src/third_party/coreos-overlay/README.md
+++ b/sdk_container/src/third_party/coreos-overlay/README.md
@@ -4,4 +4,4 @@ that differ from their upstream Gentoo versions.
 Licensing information can be found in the respective files, so consult
 them directly. Most ebuilds are licensed under the GPL version 2.
 
-Upstream Gentoo sources: http://sources.gentoo.org/gentoo-x86/
+Upstream Gentoo sources: https://gitweb.gentoo.org/repo/gentoo.git