diff --git a/library/core/src/lib.rs b/library/core/src/lib.rs
index db68f472c42f6..849bf3f41f815 100644
--- a/library/core/src/lib.rs
+++ b/library/core/src/lib.rs
@@ -205,6 +205,7 @@
 #![feature(arm_target_feature)]
 #![feature(avx512_target_feature)]
 #![feature(hexagon_target_feature)]
+#![feature(keylocker_x86)]
 #![feature(loongarch_target_feature)]
 #![feature(mips_target_feature)]
 #![feature(powerpc_target_feature)]
diff --git a/library/stdarch b/library/stdarch
index 684de0d6fef70..881249ce76112 160000
--- a/library/stdarch
+++ b/library/stdarch
@@ -1 +1 @@
-Subproject commit 684de0d6fef708cae08214fef9643dd9ec7296e1
+Subproject commit 881249ce76112cf7ce898b847a6fa0d36797b86b