diff --git a/blacklist.conf b/blacklist.conf
index ef80e41..ab03a3b 100644
--- a/blacklist.conf
+++ b/blacklist.conf
@@ -1987,3 +1987,4 @@ a0761a301746ec2d92d7fcb82af69c0a6a4339aa # kABI and quite intrusive
 b16798f5b907733966fd1a558fca823b3c67e4a1 # prerequisite breaks kABI
 f8914a14623a79b73f72b2b1ee4cd9b2cb91b735 # numerous prerequisites that break kABI
 a7fb107b7d8982ac76c958a0d2838a151b03e97e # net: phy: Re-parent menus for MDIO bus drivers correctly Cosmetic fix
+51e1bb9eeaf7868db56e58f47848e364ab4c4129 # would impact KABI (lockdown_reason)