diff --git a/sdk_container/src/third_party/coreos-overlay/profiles/coreos/base/package.accept_keywords b/sdk_container/src/third_party/coreos-overlay/profiles/coreos/base/package.accept_keywords
index a1a71f37f6..ae7b2da14f 100644
--- a/sdk_container/src/third_party/coreos-overlay/profiles/coreos/base/package.accept_keywords
+++ b/sdk_container/src/third_party/coreos-overlay/profiles/coreos/base/package.accept_keywords
@@ -119,3 +119,8 @@ dev-util/checkbashisms
 =sys-apps/man-pages-4.00
 # Fixes conflict with man-pages 4.00
 =sys-apps/attr-2.4.47-r2
+
+# Upgrade to GCC 4.9, improves arm64 support, adds -fstack-protector-strong
+=sys-devel/gcc-4.9.3
+=cross-aarch64-cros-linux-gnu/gcc-4.9.3
+=cross-x86_64-cros-linux-gnu/gcc-4.9.3