diff --git a/etc/default/grub.d/40_cpu_mitigations.cfg b/etc/default/grub.d/40_cpu_mitigations.cfg
index aaefdaf..20f62c1 100644
--- a/etc/default/grub.d/40_cpu_mitigations.cfg
+++ b/etc/default/grub.d/40_cpu_mitigations.cfg
@@ -7,6 +7,12 @@
 ## https://www.kernel.org/doc/html/latest/admin-guide/kernel-parameters.html
 ## https://forums.whonix.org/t/should-all-kernel-patches-for-cpu-bugs-be-unconditionally-enabled-vs-performance-vs-applicability/7647
 
+## Check for potential updates directly from AMD and Intel.
+##
+## https://www.amd.com/en/resources/product-security.html
+## https://www.intel.com/content/www/us/en/developer/topic-technology/software-security-guidance/advisory-guidance.html
+## https://www.intel.com/content/www/us/en/developer/topic-technology/software-security-guidance/disclosure-documentation.html
+
 ## Enable a subset of known mitigations for CPU vulnerabilities and disable SMT.
 GRUB_CMDLINE_LINUX="$GRUB_CMDLINE_LINUX mitigations=auto,nosmt"