diff --git a/src/JT809.Protocol b/src/JT809.Protocol
index 359a347..e8174f6 160000
--- a/src/JT809.Protocol
+++ b/src/JT809.Protocol
@@ -1 +1 @@
-Subproject commit 359a347cec6a1ee1ce3544d8ca399a94cadd9484
+Subproject commit e8174f672c5248a8beebaa86245c89910557f10a