diff --git a/go.mod b/go.mod
index 010f91f..accad1f 100644
--- a/go.mod
+++ b/go.mod
@@ -11,7 +11,7 @@ require (
 	github.com/templexxx/xor v0.0.0-20181023030647-4e92f724b73b // indirect
 	github.com/tjfoc/gmsm v1.0.1 // indirect
 	github.com/urfave/cli v1.21.0
-	github.com/xtaci/kcp-go v5.4.17+incompatible
+	github.com/xtaci/kcp-go v5.4.18+incompatible
 	github.com/xtaci/lossyconn v0.0.0-20190602105132-8df528c0c9ae // indirect
 	github.com/xtaci/smux v1.4.4
 	github.com/xtaci/smux/v2 v2.0.11
diff --git a/go.sum b/go.sum
index 10c5739..4a3cb74 100644
--- a/go.sum
+++ b/go.sum
@@ -29,6 +29,8 @@ github.com/xtaci/kcp-go v5.4.16+incompatible h1:/L7UP4P4H/oXpMnrb2W9oOxCMVpjPi3F
 github.com/xtaci/kcp-go v5.4.16+incompatible/go.mod h1:bN6vIwHQbfHaHtFpEssmWsN45a+AZwO7eyRCmEIbtvE=
 github.com/xtaci/kcp-go v5.4.17+incompatible h1:RudP76JCx062JSxPxSjBl+457+fS0M7T8zEZPLpC0o8=
 github.com/xtaci/kcp-go v5.4.17+incompatible/go.mod h1:bN6vIwHQbfHaHtFpEssmWsN45a+AZwO7eyRCmEIbtvE=
+github.com/xtaci/kcp-go v5.4.18+incompatible h1:zxzRP8V54vhJ8QAKEjf1b9g96R01prybCRchx6rEmtg=
+github.com/xtaci/kcp-go v5.4.18+incompatible/go.mod h1:bN6vIwHQbfHaHtFpEssmWsN45a+AZwO7eyRCmEIbtvE=
 github.com/xtaci/lossyconn v0.0.0-20190602105132-8df528c0c9ae h1:J0GxkO96kL4WF+AIT3M4mfUVinOCPgf2uUWYFUzN0sM=
 github.com/xtaci/lossyconn v0.0.0-20190602105132-8df528c0c9ae/go.mod h1:gXtu8J62kEgmN++bm9BVICuT/e8yiLI2KFobd/TRFsE=
 github.com/xtaci/smux v1.4.4 h1:FukIfahko+KHhS9Gxppkp6756opZymvPOLNmpny1is4=