diff --git a/lib/lib_serial b/lib/lib_serial
index ff197cf..ed2fa6b 160000
--- a/lib/lib_serial
+++ b/lib/lib_serial
@@ -1 +1 @@
-Subproject commit ff197cfc56e8c50314f74465bb92442e3a39a89c
+Subproject commit ed2fa6b50102607d33973c1851a0ec8c895ed4fa