diff --git a/grblHAL_Teensy4/src/grbl b/grblHAL_Teensy4/src/grbl
index d71c9a3..6499e17 160000
--- a/grblHAL_Teensy4/src/grbl
+++ b/grblHAL_Teensy4/src/grbl
@@ -1 +1 @@
-Subproject commit d71c9a351a53c0a17b4570a6daaa48f991e3e1ad
+Subproject commit 6499e1734bab4c112a1e94d291ffa83136c0b270