diff --git a/kcptun/kcptun b/kcptun/kcptun
index c4054b07..c9188299 160000
--- a/kcptun/kcptun
+++ b/kcptun/kcptun
@@ -1 +1 @@
-Subproject commit c4054b07a6b493f48d4e9c35c6c1a4a047462325
+Subproject commit c91882990d1e39acbf4cc98c63e5a7a5fc8da1c6