diff --git a/go.mod b/go.mod
index a65cd5e..1066cce 100644
--- a/go.mod
+++ b/go.mod
@@ -2,6 +2,6 @@ module github.com/database64128/tfo-go/v2
 
 go 1.21.0
 
-require golang.org/x/sys v0.26.0
+require golang.org/x/sys v0.27.0
 
 require github.com/database64128/netx-go v0.0.0-20241005022450-a32a14a3f736
diff --git a/go.sum b/go.sum
index 971afef..29c8b6a 100644
--- a/go.sum
+++ b/go.sum
@@ -1,4 +1,4 @@
 github.com/database64128/netx-go v0.0.0-20241005022450-a32a14a3f736 h1:qi40HtFq3E3OCWh2vjyOrU1XHfxWQjY7PwjDGJFoA0k=
 github.com/database64128/netx-go v0.0.0-20241005022450-a32a14a3f736/go.mod h1:8fN4B0qX2fUQzmRAo6fvA4RdsTvRLSEhIEwyzxsbiIo=
-golang.org/x/sys v0.26.0 h1:KHjCJyddX0LoSTb3J+vWpupP9p0oznkqVk/IfjymZbo=
-golang.org/x/sys v0.26.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.27.0 h1:wBqf8DvsY9Y/2P8gAfPDEYNuS30J4lPHJxXSb/nJZ+s=
+golang.org/x/sys v0.27.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=