diff --git a/src/kcptun b/src/kcptun
index e9c30f5..3210a03 160000
--- a/src/kcptun
+++ b/src/kcptun
@@ -1 +1 @@
-Subproject commit e9c30f5cec997b7dcd2ecd4481410f216364b729
+Subproject commit 3210a03ef626bf82fc8d5589ece3a3447cdb6a11