diff --git a/grblHAL_Teensy4/src/grbl b/grblHAL_Teensy4/src/grbl
index 60d8933..4039b2b 160000
--- a/grblHAL_Teensy4/src/grbl
+++ b/grblHAL_Teensy4/src/grbl
@@ -1 +1 @@
-Subproject commit 60d89338fd81a95be030eee127ba0df5c83b9a88
+Subproject commit 4039b2bb7639ecd69f4eda88be9e179702cd6b35