diff --git a/x230/README.md b/x230/README.md
index 520462d..04580e0 100644
--- a/x230/README.md
+++ b/x230/README.md
@@ -5,7 +5,7 @@
 ## Latest release
 Get it from our [release page](https://github.com/merge/skulls/releases)
 * __coreboot__: We take coreboot's master branch at the time we build a release image.
-* __microcode update__: revision `0x21` from 2019-02-13
+* __microcode update__: revision `0x21` from 2019-02-13 ([info for SRBDS hw-vulnerability](https://bugzilla.kernel.org/show_bug.cgi?id=210671))
 * __SeaBIOS__: version [1.16.3](https://seabios.org/Releases) from 2023-11-07
 
 ### release images to choose from