diff --git a/ChangeLog b/ChangeLog
index 878cb17..57c7c51 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2017-11-24  NIIBE Yutaka  <gniibe@fsij.org>
+
+	* chopstx: Update to 1.6.
+
 2017-11-17  NIIBE Yutaka  <gniibe@fsij.org>
 
 	* src/stack-def.h (SIZE_0): Decrease.
@@ -5,7 +9,6 @@
 	* src/main.c (emit_led, display_status_code, main): Use
 	chopstx_poll instead of eventflag_wait_timeout.
 
-
 2017-11-17  NIIBE Yutaka  <gniibe@fsij.org>
 
 	* src/stack-def.h (SIZE_0): Increase.
diff --git a/chopstx b/chopstx
index 3071929..9e527b0 160000
--- a/chopstx
+++ b/chopstx
@@ -1 +1 @@
-Subproject commit 3071929c621f468938129bc2ba26a7663b04edbd
+Subproject commit 9e527b05329f37331a9106c394c5fff237259dd0