diff --git a/go.mod b/go.mod
index e762e06..f031fa8 100644
--- a/go.mod
+++ b/go.mod
@@ -5,7 +5,7 @@ go 1.20
 require (
 	github.com/FloatTech/ttl v0.0.0-20250224045156-012b1463287d
 	github.com/fumiama/orbyte v0.0.0-20251002065953-3bb358367eb5
-	github.com/fumiama/terasu v0.0.0-20251003142749-f6efbe4b619b
+	github.com/fumiama/terasu v0.0.0-20251005044027-fffef1be40e7
 	github.com/sirupsen/logrus v1.9.3
 )
 
diff --git a/go.sum b/go.sum
index 9afd996..e5af6be 100644
--- a/go.sum
+++ b/go.sum
@@ -7,8 +7,8 @@ github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/fumiama/orbyte v0.0.0-20251002065953-3bb358367eb5 h1:j9o0XVvdAeLwrBYMnh0SerrMc9CgNU6AGszbsvFzoc0=
 github.com/fumiama/orbyte v0.0.0-20251002065953-3bb358367eb5/go.mod h1:FOjdw7KdCbK2eH3gRPhwFNCoXKpu9sN5vPH4El/8e0c=
-github.com/fumiama/terasu v0.0.0-20251003142749-f6efbe4b619b h1:rlBZX9DLT4Qcp3LS2fMfSjDcWu0FEOeXMsnjLUygjDQ=
-github.com/fumiama/terasu v0.0.0-20251003142749-f6efbe4b619b/go.mod h1:ltlQhbPE0423K0bNQxJdhtkYgFxXstUobc8k+9LFY88=
+github.com/fumiama/terasu v0.0.0-20251005044027-fffef1be40e7 h1:X2bY2Fvgft+n/sfzclgUclflNLRx9/n0usL8uHTaSWg=
+github.com/fumiama/terasu v0.0.0-20251005044027-fffef1be40e7/go.mod h1:ltlQhbPE0423K0bNQxJdhtkYgFxXstUobc8k+9LFY88=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/sirupsen/logrus v1.9.3 h1:dueUQJ1C2q9oE3F7wvmSGAaVtTmUizReu6fjN8uqzbQ=
diff --git a/main.go b/main.go
index 60fe015..f7061ad 100644
--- a/main.go
+++ b/main.go
@@ -36,7 +36,7 @@ var (
 func main() {
 	iphost := flag.String("l", "127.0.0.1:5345", "listen DNS UDP port")
 	fbsrv := flag.String("fb", "127.0.0.1:53", "fallback to DNS UDP port")
-	debug := flag.Bool("d", false, "show debuf log")
+	debug := flag.Bool("d", false, "show debug log")
 	flag.BoolVar(&forcefb, "ffb", false, "force using fallback")
 	frag := flag.Uint("frag", 3, "TLS first fragemt size")
 	flag.Parse()